

🔦 Light up your hustle—compact, rechargeable, and ready for anything!
The Streamlight 66604 MicroStream USB is a sleek, ultra-compact LED flashlight delivering 250 lumens and a 68-meter beam distance. Featuring a rechargeable lithium-ion battery with USB charging and a charge indicator, it offers up to 3.5 hours runtime on low mode. Built tough with anodized aluminum, IPX4 water resistance, and impact resistance, it’s designed for professionals and adventurers who demand reliable, portable illumination with versatile hands-free options.










































| ASIN | B077BLB1DN |
| Additional Features | Durable, Lightweight, Portable, Weatherproof |
| Batteries are Included | Yes |
| Battery Description | Lithium-Ion |
| Battery Type | Lithium Ion |
| Best Sellers Rank | #777 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Handheld Flashlights |
| Brand Name | Streamlight |
| Brightness | 1150 Candela |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 33,920 Reviews |
| Finish Types | Black |
| Global Trade Identification Number | 00080926666047 |
| Included Components | Battery, Clip, MicroStream Flashlight, Usb Cable, User Guide |
| Item Dimensions D x W x H | 3.87"D x 0.6"W x 0.6"H |
| Item Dimensions L x W x H | 3.87"L x 0.6"W x 0.6"H |
| Item Type Name | Every Day Carry Flashlight |
| Item Weight | 1.2 ounces |
| Light Path Distance | 68 Meters |
| Light Source Special Features | Charge Port Protection, Durable, Multi-Function Switch with Charge Indicator |
| Light Source Type | LED |
| Manufacturer | Streamlight |
| Manufacturer Warranty Description | Limited lifetime warranty. |
| Material | Polycarbonate |
| Material Type | Polycarbonate |
| Model Number | 66604 |
| Mounting Type | Cap Mount or Pocket Clip |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Number of Light Sources | 1 |
| Power Source | Battery Powered |
| Recommended Uses For Product | Cycling, Emergency, Jogging, Security, Tactical |
| Runtime | 1 hour |
| Shape | Round |
| Special Feature | Durable, Lightweight, Portable, Weatherproof |
| Specification Met | ANSI FL1, CE, IPX4 |
| Style Name | Easy-Open Box |
| UPC | 080926666047 |
| Unit Count | 1.0 Count |
| Voltage | 3.7 Volts |
| Warranty Type | Limited |
| Water Resistance Level | Water Resistant |
| White Brightness | 250 Lumens |
E**N
Best small flashlight I’ve ever owned.
Great low-profile flashlight. Pocket real estate is at a premium for me, so the size of these is perfect. I often have to use my mouth to hold flashlights at work so I can use both hands, and this has been the most comfortable flashlight my lips have clasped. I use it everyday and I use it A LOT. I have to keep an extra one of these in my backpack because sometimes the battery runs out before my workday is over, but usually it lasts me all day. Love that it’s rechargeable. I used it for over a year before I noticed it started to die quicker. I just replaced the old battery with a new stream light rechargeable battery, and it was like new again. Still WAY cheaper than a flashlight that just uses standard AA/AAA or CR123 batteries. I work on cars, so I’m never using it for anything more than 6 feet away, but for my purposes, this flashlight has been the gold-standard I measure all small handheld flashlights against. The amount of brightness you get for the size of the flashlight is top tier. The pocket clip snapped and broke on my first one after a couple years, but like I said, I use this all day everyday. I’d still say the durability is great for the price. I had to remove the pocket clip on my new one and squeeze it with some pliers to make it clamp down tighter because it kept falling off my pocket. Since then I haven’t had any issues. Love this little flashlight. I went through about 5 or 6 small flashlights before I found this one. This one is better in every way. As long as the price doesn’t go any higher it’s a 10/10 will buy again when I inevitably lose mine.
S**T
Worked for 6 years, and is small enough to fit a key chain
Amazing small flashlight that works in a key chain and fits nicely in your pocket. Is bright enough for any needs I've had in the past 6 years in all temperatures. The two lighting intensity options have also come in handy, and the brighter intensity being the primary one has been essential; only sometimes wanting to use the dimmer option by double tapping the activation button. By feeding a zip tie around the end of the clip area loop, you can then use that tight loop for a key chain and the flashlight will stay in place while still allowing for articulation in the key chain. The seal to the charge port has worked fine, even surviving half an hour in the snow after I accidentally dropped the flashlight there and later went looking for it. I haven't felt the need for another flashlight ever since I got this, and having it always with me with my key chain has been a positive in some unexpected scenarios.
R**E
Badass Candle.
This is one of the most useful tools in my arsenal. I use it for EDC, and damn does it come in handy! I use it everyday. I actually purchased 4 of them so far because they are that good. Very bright, can be clipped to your hat for use as a headlamp, has two settings, lasts for hours, and it's rechargeable. What's not to love? I have 3 of the 4 flashlights left ('cause an ex-girlfriend stole one) and I purchased all in Coyote. Amazing little light! Be sure to charge it up before use/upon receipt so the battery reaches its maximum power, potential, and longevity. The oldest one I have still burns for 6+ hours and I bought it in 2021.
H**5
Wow
This is an amazing light. The one thing that I love about the Coyote Color Streamlight is that it does the high which is 250 lumens then when you double tap it then it goes to the low setting I use this light on high for quick inspections and then a brighter light for other work. The charge is amazing. It is a very compact size. And for the money and lifetime warranty you can’t beat it. It doesn’t get hot like a lot of lights do and you can’t beat the functionality's best value for the money.
J**.
Good pocket light
Pros: Compact size (the length about the size of my index finger from tip to knuckle, I use XL gloves) Lightweight (Stays in shirt pocket and doesn't fall out) Good Brightness Metal case, so should be fine from 5ft drop onto cement (haven't tested yet tho) Rechargeable, if that model is purchased (about 2-3hr if fully charged) Cons: "focusing" lens/adjustment is virtually pointless, as in barely makes a difference (tip slides out to "focus" light beam ) The On/Off button modes This is my biggest gripe and The reason I gave this light a 4star instead of 5stars I believe the button has 2 modes of use 1: press lightly and hold button down for quick inspections or uses (manually keeping light powered on 2: click light on/off, for extended periods of use For the 1st mode, Light works great, highly recommend if you plan to use it like that, BUT the 2nd mode is where I have my issue. The button require alot more effort to click on/off than it should. I started thinking I might be getting arthritis (I am a mechanic so possible) because sometimes I could not click it on/off without pressing down fairly hard. I assume it's an issue with how "small" the button is (the rubber isn't as squishy, so more resistance) but I have had times where I'm having to actually "think" about how I'm pressing the button, because I'm unable to click it on/off, I've never had similar issues with other lights before, except for when the button was broken. Edit: I added a small piece of paper under the button (you can unscrew the button) and now I can click it on and off effortlessly. Also added pictures showing the "focusing" function.
B**S
High quality Admin / Task Light
Great mini task light. Easy to use. One button push for low. Two for high. Click for constant on. Light output is good for its size. Enough to be usable. Good Hotspot / focus for a mini light. Rechargeable batteries is a huge plus. Power / battery life is good. Small form factor. Easy to carry in a bag or pocket. Takes up little space.
J**B
Awesome EDC flashlight
Awesome rechargeable edc flashlight. I have the non rechargeable version I bought 12 years ago. Still works great, it's just my kid decided it's hers now since all of the other flashlights don't work anymore. These stream light flashlights last forever. I still have my uv stylus that's about 20 years old. This newer upgraded micro stream is fantastic. It's significantly brighter and has two power settings, and it's rechargeable!!! I also like the coyote brown color. I may also give the Macro stream a try as well for camping
T**R
Fantastic small rechargable penlight.
Excellent penlight, its small, lightweight, very durable its been dropped through engine bays countless times, its resistant to quick drops in automotive fluids and water, the o ring seal that protects the charging port works great. Ive used Streamlight Stylus penlights for a long time and this one is just as durable, more than twice as bright, is smaller, and costs significantly less to run. The money I save not buying batteries has paid for this flashlight a dozen times over in the few years I have used it. The pocket clip is fantastic the double bend in it allows it to slip into your pocket easily and allows you to clip it to the bill of a hat as a headlamp, the clip holds the light securely in your pocket and doesn't easily pop off the body of the flashlight, that is an annoying and very common problem with other lights I own which is why I glue them in place. (glued this one too) The rechargeable battery gives +50% brightness for 2-3 days for how much I use it which is short periods that are usually 30 seconds to a few minutes at a time at least a dozen times throughout the day. The battery life is comparable to the life I was getting out of 2 lithium AAA batteries in larger/longer flashlights like the Stylus the only difference is when I notice its running down I just leave it on to drain the battery so I can recharge it instead of limping along with a light that is too dim for a day or two to not waste money, most importantly I don't worry about using it "too much" since I am not paying for expensive lithium batteries. From completely dead to fully charged takes about an 1.5-2 hours (never timed it but that's a good estimate) but if the battery is dead and you just want to use it 15-20 minutes on the charger gets you plenty of brightness and usable run time. In summary this is a fantastic, small, lightweight, fairly bright, durable rechargeable penlight that performs better than the comparable AAA 2 battery lights I have owned from every major brand. Buy one you will not regret it.
Trustpilot
2 months ago
3 days ago