Logitech M570 Wireless Trackball Mouse – Ergonomic Design with Sculpted Right-Hand Shape, Compatible with Apple Mac / Microsoft, USB Unifying Receiver, Dark Gray

I've had at least four of these (maybe six). The left mouse button always goes bad eventually. I suspect that people who dispute this either don't click a lot, or don't use the mouse all that much. If you mainly just browse the internet and read your email, this mouse might last forever for you. Because this mouse it popular with gamers, some users do a *lot* of clicking. In my case, it's programming and Freecell, which means a lot of both clicking and dragging. If you click enough, the left mouse will start to double-click when you single click. You might not notice it if you're just typing text, but it will show up very fast in computer card came like Freecell where a spurious double-click has dramatic and unpleasant results. It also becomes almost impossible to highlight text, because the button won't stay down. These are the same symptom, really. When you press the button down, it will alternately click and unclick because the top of the switch under the button is dented, and though the button is down, the switch may or may not be at any given moment. So, why five stars? Because this is, ergonomically, the best mouse on the planet, it's very reasonably priced, and it has a three-year warranty. Seriously, you need to at least try this mouse. Once, in a period of extreme boredom, I used this mouse to play Freecell for seven straight hours. No discomfort, no carpal tunnel, no ill effects at all as far as my wrist and hand were concerned. I have the mouse sensitivity set at its max. It takes a little getting used to, but I can move the mouse from the beginning to the end of this paragraph by moving my thumb less than half an inch. This makes highlighting text a dream once you get used to it. I use a keyboard drawer under my desk because it keeps me from aggravating my elbow and shoulder. That means the mouse goes on the little pull-out table on the right side of the drawer. When I used a conventional mouse. It kept either making me bang my hand against the keyboard on the left, or falling off the right side of the pad. This mouse never moves. When I reach for it, it's always exactly where I expect it to be. As for the button trouble. I have not had any luck getting the mouse apart to try modifying the microswitch. And you can forget about the solutions suggested by Logitech. If they work, it's only for ten minutes or so. However: I just read a comment here from someone who fixed the problem by putting a piece of note card stock under the left button. It fixed the problem but, understandably, made the button difficult to click. I just tried fixing it with a piece of very thin paper from a cash-register receipt. It worked! The button is a tiny bit harder to press, but it's still pretty sensitive. If the fix doesn't last, I'll just shell out the money for a new one. I often buy two at a time so I'll have a spare to use when the button goes bad -- this is handy when you have to get it replaced under the three-year warranty. Seriously, give this thing a try.

I prefer using a track ball verses a standard mouse. My trackball use even goes all the way back to the first computer we had in the 80's with the first Kensington trackball. I have had this wireless Logitech 570 now for a several years. It is so worn that the Logitech logo is gone on the top. The ball pops out easily for cleaning the contacts and air spraying of the optical area. Whatever is on your hands tends to end up collecting in the well- especially since I have cats. Small cat hairs get caught sometimes. And a minimal amount of dust or lint on occasion. Since I prefer to not move my hand around on my desk with a traditional mouse, I don't mind the small effort required to clean out the ball well. It never stops working- it just feels kind of "sticky". The ergonomic handle is comfortable and I can play Minecraft easily (and better) with the M570 because moving and placing items is quicker and the control is excellent. Standard web surfing is convenient with the page forward and back buttons on the top left. It may seem awkward at first to use your thumb, but it isn't hard to adapt. I actually keep a back-up wireless Logitech regular mouse handy for the times when company comes over and they prefer that mouse. The battery lasts a long time and it only takes one AA. The reason I am reviewing today is I am shopping for a new M570. The wireless connectivity has never given me any issues and works very well. I like not having cords on the desk. I could not say how many times this little wheel went around in the well, but I can tell you it was probably several hundred thousand times and is actually still working well. There are 3 ball bearings holding the ball in the track well, and I take a tiny brush now and then to clean around them. Looking at them, they are not worn down even now. If you are in the market for a trackball mouse, I recommend giving this one a try. I really don't have one complaint to share, and want to thank Logitech for the longevity of my M570. I am getting another for my other computer while they are on sale.

This is my first trackball mouse, and I really like it. I love that it just sits in one spot and I don't have to worry about it sliding around and moving on the screen. I have it hooked up to my desktop, which is hooked up to the TV about 10 feet away. The responsiveness is great, no lag. It does take a little bit to get used to the trackball, and maybe adjusting the responsiveness, but I think it's worth it. The feel is great, and I love the extra side buttons. Overall it's well designed and functions perfectly. 2016 UPDATE: I've had this mouse for over a year now, and it's still my favorite. It's become my main mouse to use with my laptop at home. In fact, I'm going back to buy a second one for my work computer. It's great that it's stationary, so it doesn't need as much room as a regular mouse. I also have less strain on my wrists, since I don't need to move it around. I don't think I've needed to change the battery yet, because I literally just realized that the light on top is a battery indicator. Every once in a while (depending on where I'm using the mouse), it will get resistant or skippy - that just means it needs to be cleaned. Pop out the ball, clean the lint off the 3 sensor points, and pop the ball back in! That always fixes any responsiveness issues I face. I will say (for when others use your computer) those who are not used to this mouse will either love it or hate it. As I stated, earlier, there's a learning curve, and people who didn't sign up for it won't like that curve. Almost everyone who uses my mouse is super annoyed by it...I think one person loved it and wants to get her own, understanding that it's great once you're used to the trackball. But everyone else is quite confused by why I would want it... So really the only negative is other people's reactions to being forced to use it with my computer. 2020 UPDATE: The original mouse I bought finally kicked the bucket mid-2019, which was about 4 years after purchase. Its responsiveness was going downhill, mainly having issues with the left click. So I replaced it with the same thing, no regrets. I have one at work, and one at home, both for laptops. I will likely be purchasing a third one this year when I buy a gaming desktop. Basically I'm just to the point where every computer I own needs this mouse. Now that I have more than one of these, there's the real potential to mix them up (also a problem with owning multiple of any Logitech mouse receivers, cause those guys look the same even if the mouses don't). What I do to avoid any issues on that front, is put a drop of nail polish on the mouse and the receiver, so they match, and I know if I have the right ones together. (Ex- Found a receiver with a drop of holo green nail polish? I know my work computer's mouse has a green drop, so I must have left it at home and need to take it back to the office. Problem solved.) As long as the polish is put somewhere you don't touch much (or at all), it'll last a long time.

I'm using a Lenovo laptop with the "eraser" pointing device in the keyboard (I've turned off the touchpad as I hit it by accident too much of the time). While the pointer is certainly compact and convenient, it causes significant hand fatigue due to the amount of pressure you have to use to make it work. When working at a desk, I can use a regular mouse - but even that leads to hand fatigue albeit in a different part of the hand. Thus began the Quest For Mouse Perfection. Bear in mind, most days I work from home using a lap desk which just barely has room for a traditional mouse. Because of this, I wanted something that didn't require much mousing surface. First I tried a handheld mouse such as this one: http://smile.amazon.com/DBPOWER%C2%AE-USB2-0-Wireless-Handheld-Trackball/dp/B009ZM75GG/ref=sr_1_1?s=electronics&ie=UTF8&qid=1404301864&sr=1-1&keywords=handheld+mouse. That was pretty interesting and definitely reduced hand stress, but I found the need to actually pick up something to be a lot more intrusive than I cared for. It would be great for controlling a computer when giving a presentation or something (and there's even a version with a built-in laser pointer for presentations or just playing with the cat). I truly loathe traditional trackballs, and I've spent a fair bit of time trying them over the years. I stumbled across the Logitech M570 when browsing an office supply store and thought it felt pretty good, so I ordered one from Amazon and gave it a try. What's good: less fatigue and stress on various parts of the hand. If that's the sole concern, this device definitely delivers. I can see where long-term use MIGHT cause thumb fatigue but so far, I'm finding that the ball moves well, and is much easier to use for precision movements than a traditional trackball. If I find thumb fatigue to be an issue, I can switch among the trackpoint, the handheld, and the Logitech. What's not as good: If you use a wrist rest, the wrist angle isn't great. My lap desk has a wrist support across the entire front of the surface, so I can't avoid it. If I set the Logitech on a book, that raises it just enough to solve the problem. My suggestion: try the mouse with various wrist support or mouse-raising options to find the angle that feels right for you. Arm fatigue when using a laptop computer: If you have no support for your arm, it leads to fatigue. A pillow or chair arm can solve that. Using it on a table where my arm rests on the surface helps a lot. But bear in mind the wrist-support issue: the arm support would need to be as high as the wrist rest - or you can just move the wrist rest out of the way of the mouse. The programmable forward/back buttons are interesting but honestly, I've never bothered. I tried playing with them with one piece of software but I never remember to use them. What's unfortunate: There is no left-handed version of this mouse, nor does Logitech plan to produce one as far as I can find. As I'm right-handed this isn't an issue, though I have been known to switch my traditional mouse to the other hand for fatigue relief. You probably could learn to manipulate this one left-handed. I actually tried this and had to use my pinky finger (easier) or my ring finger (less easy) for the trackball, and neither allowed any precise control of the mouse. Plus the hand positioning is awkward, almost completely defeating the purpose of the ergonomic design. I'm not sure it's any worse (and may be better!) than with a regular trackball mouse such as Logitech's Marble Mouse (http://smile.amazon.com/Logitech-910-000806-Trackman-Marble-Mouse/dp/B001F42MKG/ref=sr_1_2?s=electronics&ie=UTF8&qid=1404303110&sr=1-2&keywords=logitech+trackball) - I've used that one and dislike it, but I don't have one handy to compare. Update 6/2016: After over 2 years of use, it died. It still worked, but many times a single click resulted in a double-click being sent to the computer. Pulling the ball out and attempting to blow any internal debris out would sometimes help for a bit, but some searching suggests this is common behavior as this mouse ages. I'm not docking it any points because it does see 40-50 hours a week of use, and mice do wear out. In fact I replaced it with another of the same model. Update 3/2019: Same as before: the mouse lasts about 2 years when all is said and done. One trick to extend its life is to switch the mouse buttons using Logitech's software - i.e. to left click, you click the right button. This is easier to get used to than you'd think, though it does make switching to a different computer+mouse pair a bit amusing as you you have to remember to reprogram your fingers! I'm ordering another replacement, as there truly is no equal.

I have had three of the M570 trackball mice over the years, and each have lasted me over five years each (they overlapped as I got for both my desktops and laptops over the years). When I was given the opportunity to review this new M575 version, I couldn't wait to compare it with my older ones. I have also included a few new photos for you to see for yourself. First, as you can see, the size is a bit smaller. I have small hands for a guy, so I don't mind - it still ergonomically fits my palm perfectly. The original was a bit organically space age-looking anyways, so the difference is not drastic. But the M575 goes further space-age with the ridges for your palm. It does affect your grip, and you don't feel it pinching into your skin. Overall, both look beautiful, very ovular with rounded edges all over. The differences are: The buttons have a lighter and more responsive tactile feedback. The back and forward buttons are much easier to press, not as stiff as the older version. The scroll wheel has a more distinct bump when you scroll it, and it is stiffer to press, which makes it easier, as the older version was more spongy and weirder to press. The trackball feels just as swift and precise, but there is a slight different feeling that’s hard to describe. The best way I can put it is it’s not as loose. Not stiffer or harder to move, just more tactile. Finally, there is now the much-needed Bluetooth connection, which makes it connect with MacBooks so much easier, since the older version could only connect with the USB thumb drive, which is old USB and not USB-C that’s needed for MacBooks. The responsiveness is still instant as the USB connection, so there’s no downside to connect it via Bluetooth. Overall, this is meant to replace the M575, and make it the cheaper alternative to the recently new MX Ergo trackball mouse, which is super awesome, especially since you can change the angle of usage. But then it’s double the price at $100 and it not for everyone. I know you can find the older M570 for cheaper, but all the quality of life improvements make this one a worthy successor that I recommend to all. I still love my M570s, but after over 10 years sitting on top its throne, it’s now time to pass the crown to its offspring. For those still interested, here is my original review of the M570: I just want to give my two cents' worth what a great deal this trackball mouse is. I got it for $17 on sale, and even at $25 it is a great deal. These used to be $45+, but now at around $20, it is the best trackball on the market in terms of quality, functionality, and price. This is the last vestige of ball mice, as now all mice are digital, laser-tracked, etc. What makes this mouse good is that because of the trackball, and the motion-less nature of the mouse, it should last you a whole decade if not more. The first one I bought for $30 almost three years ago is still going strong. I have never had to wash or even wipe down the ball. Sometimes, when I feel the tracking isn't as smooth as I would like, I just pop the ball out and rub it around within my bare hands, pop it back in and everything returned to tip top form. The plastic quality is decent, and the battery life is superior - one AA battery can last you more than a year of everyday use - I don't even remember when I changed the battery.

This is a review of the Logitech M570 Wireless Trackball. The 8,000+ people who gave this a positive review before me are right. If you’re reading this, clicking the “Buy Now” button is not likely to be a decision you’ll regret. I paid full price for this on Amazon about 9 months ago. There’s many excellent videos and photos already; I couldn’t do any better. ♦BACKGROUND: Although I’m relatively young (early 30s), when it comes to using computers, I try to maximize keyboard use and minimize mouse (or trackball) use. From what I’ve observed, those who are most efficient in working with computers are this way, and I try to emulate that. I LOVE keyboard shortcuts and regularly challenge myself to adopt more (increased use of the Alt key is my current focus). ♦WHY A TRACKBALL: I took a new position at the same company recently, which involves using more web-based applications (boo). Unfortunately, most of these are not keyboard-friendly, and I was using the mouse much more to the point of experiencing hand and wrist discomfort regularly. I remember my father having a trackball for ergonomic reasons when I was a child. It was the kind with the huge ball in the middle. I disliked it intensely then, but thought it was worth a try if it could help me avoid developing serious or permanent problems with my hand and wrist. ♦WHY THIS TRACKBALL: When I searched Amazon for trackballs, I saw the best-seller tag on this and decided to look further. I’ve had good experiences with the other Logitech items I own. The design appealed to me: it is completely different than the one from my childhood. Prior to purchasing this, I deliberately avoided buying wireless mice or keyboards that take replaceable batteries. It’s probably irrational, but I thought I’d be having to change batteries frequently, which would be extra time, money, and an inconvenience. If the wired version of this trackball wasn’t ten times the cost of the wireless version, I definitely would have chosen the wired one. P.S. If you’re just beginning your search and you noticed and are curious about the *slight* price difference, from what I’ve read, there was a copyright/patent issue with the wired trackball and Logitech isn’t allowed to make it anymore. The difference in speed between the wireless and wired versions is enough to be noticeable to gamers; and the wired version is valued highly by the gamer community. ♦LEARNING CURVE; ADJUSTMENT PERIOD?: This is silly, but I was somewhat worried that I would hate the trackball and not want to use it. I wondered if using the trackball would make me less efficient and if it would be hard to get in the habit of using it. Since I use it on a desktop and there’s no shortage of USB ports, I kept the mouse connected and plugged the Logitech Unifying receiver into another one. For a few days (not longer than a week), I used the trackball when I wasn’t in a time crunch and switched to the mouse if I needed to speed up to get something done. Although I still keep the mouse on my desk, I eventually got to a point where I wasn’t using the it at all. If the trackball is slowing me down, I don’t notice. Overall, switching to the trackball was far less traumatic than I feared. Side note: I’m left handed. I’ve always kept the mouse on the right side of the keyboard and used it with my right hand. I would consider myself on the lower end of the spatial-kinesthetic intelligence scale, but using the trackball with my right hand and moving the arrow with my right thumb is a breeze. ♦WHAT I LIKE •SPEED: As a non-gamer, I noticed no difference in speed from the wired mouse I was using and the trackball. •PLUG ‘N PLAY: There’s no software to install (for reference, I’m using this with Windows 8). I could have gotten another ergonomic evaluation and had my work order and pay for some kind of mouse-alternative, but I didn’t want the hassle. Since I don’t have admin rights at work, I like that once the receiver was plugged in, the trackball was recognized right away and ready to be used. For convenience, the receiver can be stored in the battery compartment. •BATTERY LIFE: Having used the trackball at work for 40+ hours a week for 9 months, the original battery is still going strong. Another worry of mine washed away. If battery life was a concern, I could always use an Eneloop (rechargeable) battery. Side note: this gave me confidence to purchase a wireless Logitech mouse for home use. I don’t use the computer much at home, so I wasn’t concerned about hand and wrist strain there. •DURABILITY: Clumsy would not be an inaccurate word to describe me. I’ve knocked the trackball off the keyboard tray where it sits *many* times already. Usually, the ball comes out when it hits the ground. Despite this abuse, the trackball doesn’t show any wear and tear, and the ball pops right back in. The compartment where the ball sits picks up some dust and debris but it’s easy to clean out. (Other reviews provide more detail on cleaning and maintenance). •PAIN-FREE ME: The discomfort I was experiencing in my hand and wrist has vanished. Shortly before deciding to order the trackball, I would see the carpal tunnel center advertisements on television and wonder if that was my future. That no longer concerns me. ♦CONS(IDERATIONS) My hands are on the small side. For a reference, with my hand outstretched, I measured the distance from the tip of the middle finger to the bottom of the palm (by the creases where the wrist starts) as 6.75”. I spread my thumb and pinky fingers out as wide as I could and the distance was 8.25”. Until recently, the fleshy part of my palm (the bottom part, under the pinky finger towards where my hand met my wrist) would get red by the end of the day on most days. At first, I was thinking that I’d prefer the body of the trackball to be made of something more comfortable. After more thought, I came to the conclusion that the redness was a result of my palm resting on the body, causing the pressure and redness. If my hand was larger or the body smaller, the weight of my hand wouldn’t be on the body. I have a spare mousepad with a gel wrist rest and decided to start using it with the trackball. Now that the gel piece supports my wrist, the weight of my hand isn’t on the body of the trackball. After a couple of weeks, the issue has largely been resolved. After re-reading some reviews today, I’m thinking about making a foam wedge as described in another review. There’s only one other annoyance for me. I assume that the index finger and middle finger are supposed to rest on the buttons surrounding the scroll wheel. Although I don’t use the back/forward navigation buttons, my index finger has a habit of resting on them, and I’ve been “left-clicking” with my middle finger. It works, I suppose, but I’d be happier if those buttons weren’t there. Recently, I’ve been using the trackball rotated about 45-90 degrees counter-clockwise. In this position, my palm doesn’t rest on it and I naturally use my index finger for the left-click button and my middle finger for the right-click button. Manipulating the trackball with my thumb is still comfortable.

I had to purchase this M570 Mouse after having too many difficulties with the Newer model which is the M75S Wireless Ergonomic Track Ball. The M75S is very sensitive and difficult to use whereas the older model (which has been discontinued), but I was lucky to find on Amazon is perfect and worth the extra money I had to pay. I previously used the M570 Mouse for many years and when it stopped working, I purchased the Newer M575S model which, in my opinion, is very frustrating to use.

I'm a huge fan of gaming in general. Doesn't matter if it's PC or console, it's something I enjoy. The one thing I never really felt at home with, however, were mice. Unfortunately, I could never find a mouse that really felt 'right', or didn't hurt my hand after prolonged use. The mousing 'motion' is just not something that, well, meshes with me. I've been through dozens of Logitech and Razer mice, and eventually gave up. I knew what I wanted - Thumb control, like playing with a controller. I eventually found myself looking into a trackball, and settled on the old "red ball" trackman wheel. The Trackman Wheel, unfortunately, had a few issues. I didn't mind that it was wired. I did, however, find myself frustrated with the lack of forward and back buttons. Second of all, the optical DPI was just way too low for precise aiming in FPS games. If I remember correctly someone rated it at 400dpi, which is just unacceptable. A solid trackball, but these two little errors sent me slinking back to my trusty Razer Lachesis. I actually wrote Logitech an email describing a "gaming trackball" with laser tracking. I highly doubt they ever read my email, but they actually released the exact product I wished for, so I jumped right on it! Unfortunately, I have yet to get an invite to the Vine program, so I actually had to dish out the 49.99 myself. I don't regret it! First of all, the wireless technology in this trackball is certainly up to date. Latency is not an issue at all, and having the option to be wireless is certainly a plus. I do wish it came with a detachable cable in case you didn't want to deal with the battery, but then again, the single AA battery this unit requires promises to last up to 18 months. If this is true then I cannot mark this product down. I've had it for two weeks now, and so far, so good. I am running Windows 7. The addition of back and forward buttons answers the plea that many people have been crying for ever since the old Microsoft Trackball Optical was discontinued: A fully featured thumb-controlled trackball that doesn't cost 400 dollars due to becoming a collectors item. To make things better, most people always agreed that the Trackman series had better ergonomics than the MS Trackball, however the lack of buttons was the big deal breaker. It seems that most companies focus on their palm/prominent fingered trackballs and totally ignore the thumb-based ones. The M570 is the answer to all these problems, well, and more. I was quite shocked and excited when I heard that it was using a laser sensor. I am unsure of the DPI since Logitech doesn't seem to release that information, but it's certainly much higher than the Trackman Wheel, which makes it a godsend. The accuracy is top notch, the glide of the ball is just right, and the buttons feel solid. Nevermind the comfort of the ball in general. There are no problems there. I really cannot find anything wrong with this ball. If I was going to add anything it would be the following: Actual published DPI rating, Additional buttons for on-the-fly DPI adjustment, and finally one of those awesome Hyperscroll wheels that Logitech has released on their gaming mice. It seems that Logitech is even downplaying the fact that this ball is laser-tracked. The question is: Why? I know I am not the only person who games with a trackball, and while many people have settled with Kensington's balls for the task, I have been waiting out for an appropriate thumb-controlled trackball. Perhaps the M570 is just a test before they release the true "gaming grade" trackball? Or will this be the final hurrah in the trackball world? As of writing this, the M570 is undoubtedly the best Trackball on the market, not only for gaming but also casual use. Despite the few features that could have been included, the addition of laser tracking and two control buttons make it tough to beat and fills a huge void in the market. One can only hope this device's success convinces Logitech to continue further with their trackball efforts. Until then, the M570 will be my ball of choice for headshots.

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La trackball, la boule bleue, est le seul élément qui fait bouger la souris. J'avais mal compris, je pensais qu'elle était hybride et qu'on pouvait l'utiliser aussi comme une souris classique. Pour autant, j'ai adopté cette souris; au départ, j'avais un peu de mal à être efficace, je mettais globalement du temps pour tout; fermer un onglet, bouger une fenêtre, me positionner sur un champ de saisie... Après quelques jours (5 au moment où j'écris) j'ai eu aujourd'hui au bureau où je travaille avec une souris une sensation inconnue jusqu'alors : J'ai réalisé que les souris classiques étaient inconfortables. J'ai sérieusement envisagé de m'en payer une pour le travail. Je l'envisage d'ailleurs toujours. A ce prix, ça va :) Ce n'est pas rien, mais ça va, la souris est vraiment bonne. Aujourd'hui, je me dis que je pourrais à peu près détourer une forme avec cette souris - je viens d'essayer et effectivement j'arrive à beaucoup plus de précision que ce que les premières minutes d'utilisation m'ont laissé envisager. C'est un détourage crado, je ne pense pas que cette souris soit adaptée à un graphiste par exemple. (bien qu'il doit bien y avoir des fondus qui arrivent à réaliser des chef-d'oeuvre avec). Là où je vois la différence c'est le renversement total dans la vitesse de déplacement. Une fois qu'on a progressé et qu'on est un peu plus net dans les mouvements, on envoie la souris où on veut en un coup de boule (si je puis dire). Au départ je trouvais pénible de ne pouvoir sélectionner rapidement un onglet dans mon navigateur web, aujourd'hui je trouve beaucoup plus rapide et confortable de naviguer avec la trackball.

Estoy bastante satisfecho con mi compra y se la recomendaría a cualquier persona que busque una alternativa ergonómica al mouse convencional. Decidí probar este mouse debido a que estaba desarrollando cierto dolor en la muñeca debido al prolongado uso del mouse en el trabajo y al cabo de unos pocos días el dolor y las molestas habían desaparecido. La mano descansa muy cómodamente sobre el mouse, lo cual habla bien sobre su diseño ergonómico. La calidad de los botones hasta ahorita me ha parecido buena, al igual que la rueda central. La esfera es bastante suave y me parece que su tamaño es muy adecuado al tamaño del resto del dispositivo. Creo que tengo manos tamaño promedio y creo que este mouse también resultaría muy cómodo para alguien con manos muy grandes. Sin embargo, pudiera ser difícil para alguien con manos muy pequeñas el tener un manejo ágil del mouse. Después de alrededor de 6 meses de uso no he tenido que reemplazar la batería y nunca he llegado a tener ningún problema de conectividad con el receptor incluído. Sin embargo, si pudiera mejorar algo de este producto sería el agregarle la conectividad Bluetooth sin necesidad del receptor (hay un modelo más reciente de este mouse que ya cuenta con esa característica=.

Amazing Mouse. It gives you a good control of working as well as gaming. The track ball takes your experience into an old era and very smooth progressions on the screen. You don't have to drag this mouse to extreme ends to move the mouse cursor across. The Track Ball does this magic. The Mouse remains stationary and the cursor is controlled by the trackball. Everything is good about this mouse. Along with the mouse I got a Duracel AAA battery which I am using since about 3 months now, and it is still performing good. Ofcourse, I turn off the mouse power button at the bottom when I am done using it or when I am moving away from the desk for a long time. This saves a lot of battery.

トラックボール初心者は是非って感じ 最初はよくわからん感覚だけど