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.

Great product. Easy to use

Great! Just like described.

I needed an additional Oxometer. Couldn't find one the same brand, as original I have. This one had the same features. So far it is accurate, and I'm happy with my purchase.

I wore it my doctor's office, and check it the same time the nurse did and it was right on point. I like that no matter how you hold it the numbers pop up facing you, you don't have to turn your hand. I went out and bought another one for my husband as he uses mine all the time. I definitely recommend this.

Easy to use. Came quickly. Very happy with it. Comes with a case.

Excellent meter for a reasonable price that returns accurate readings a bit faster than expected. (Crossed checked this meter's readings with a high-end, medical grade (and brand) meter with pretty much the same results each time). FYI & remember that these "retail to the public" meters are for monitoring yourself in sports, athletic and exercising related activities and not for use in a professional medical environment as explained/disclaimed in the meter's enclosed instructions as well as on the product's webpage (on Amazon and other seller sites). My take by this statement is that it's more to protect both the manufacturer and the seller than the meter's owner and end user. Medical office type meters are much more expensive than these "over the counter" meters that consumers (like us) buy...though the technology is pretty much the same.

The item arrived promptly and is working good.