AccuMed CMS-50D1 Fingertip Pulse Oximeter Blood Oxygen Sensor SpO2 for Sports and Aviation. Portable and Lightweight with LED Display, 2 AAA Batteries, Lanyard and Travel Case (White)

UPDATE: Still using this several times a day, and it’s still going strong after over 2.5 years of use. I’ve owned several different pulse/ox devices over the years and I can say that this one is the best of the bunch. I actually came back to Amazon tonight to order a second one so that i’ll have a backup, especially since I’m doing a lot of travel these days, mostly long cruises of at least 21 days. It uses AAA batteries which are easy to find almost everywhere. And it’s not a battery ”hog” -- the first set if batteries lasted about 18 months of daily use, checking my numbers 2 or 3 times a day. AND it’s staying accurate. I’ve taken it to my doctor's office twice a year to compare with my doctor’s pulse/ox and it’s almost always exactly the same or at most 1-2 points lower than my doc’s. It’s still a 5-star item. Original review: This is a newer version of an AccuMed Pulse Oximeter I've been using for several years. It's accurate, easy to set up and use (just put in the batteries), and the lanyard and case make it easy to take along when I exercise or travel. I have severe emphysema, prone to CO2 retention, so it helps to keep tabs on O2 levels when I'm doing anything strenuous so I can take pre-emptive action (specific breathing techniques) before I run into trouble. There are a number of small oximeters on the market and they all operate on similar technology, so it comes down to the quality of the materials used and how it's put together. Some are really junk -- accuracy is whacky, the spring clip gives out, etc. This one is very good quality and built to last. I've been using it for several weeks, usually 2-3 times a day -- more if it's a heavy exercise day -- and I've seen no issues at all. This one's a keeper -- solid 5-stars for accuracy and quality.

Works as advertised. Readings quickly appear and are reasonably accurate. Prefer the battery size to the button battery that most use.

Reliable oximeter, easy to use, very portable

Works well and has an active heart monitor that gives you a visual line of the beats. Handy when trying to get a reading off of someone that has fingers that don't read easily.

Arrived quick! Great device, easy to read and use. Also has two viewing options, landscape or vertical. Handy!

Accurate - well made!

My husband needed this after coming home from the hospital. It has been really good for us. Would recommend

Good product. No problems

Very good product.

This is an excellent tool. I am currently in hospital and can check my oxygen level against the ones they use in hospital. Very good quality I am very pleased with the product.

It has proved very useful as my wife has recently been in hospital after being unable to monitor her oxygen levels more closely

Beautiful plece of equipment and did exactly what its meant to do.

Okay+