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.

Super accurate, comfortable, and simple to use! I carry it in my daily backpack and check my readings once a day!

Works just as described and I especially like how easy non disruptive it us to use.

Works well in any orientation and is bright and clear.

I've had the unit for about 1 week now. Very easy to use. Oxygen & pulse readings are available immediately. Screen, font size & colors are easy to see. The clamp fits my fingers with the right amount of pressure - not too tight or loose, no slippage or movement. I like the case & lanyard for travel.I'm just surprised there was a weight limit shown in the instruction manual for proper readings - 88lbs - 242lbs. I'm a female that weights over 250lbs. There was also a statement about fingers - nothing specific though. Just don't use on thin or cold fingers. No clarification on what thin means. Being a larger person with narrow ankles & feet, wrists & hands, I won't know if my thin fingers or weight affect the accuracy of the readings or not. The product description on Amazon doesn't mention any of this. If they had, wouldn't have bought it.That being said, I don't know how accurate the readings are. Maybe I'll Take it to my next doctor appointment & compare with their readings.

Not bad at all. Perhaps not as accurate as the more expensive oximeters. But the nurse in the hospital recommended using inexpensive oximeter from Amazon, claiming the expensive ones are unnecessary.

Well worth the price as it is high quality and works well. I really like the case that comes with it.

Use this pulse ox for my job as a medical assistant. I drop it all the time and it never breaks. It’s my favorite from all the types I’ve tried.