We don't have a way to verify the accuracy of the pulse oximeter, but it is very easy to use and has worked for many samples.

The O2 monitor was very useful during COVID-19. I havent had any issues but sometimes the readings arent entirely accurate. Usually it is ok, but you cannot expect it to be 100% accurate given the affordable price.

Handy little gadget measures oxygen in blood with infrared light. Took a few days to get delivered.

For people who have medical issues with breathing I think this product is handy. I keep one in my purse and one in my home.

This works great. I needed this for my husband who has been having trouble breathing, so I needed to watch his oxygen. So easy to use, easy to read, and has a cord so I can just leave it on my husband and check his oxygen as needed.

Came in reasonable time and good price. So far so good as far as it works as expected as accurate pulse reading, which I can count to correlate . This usually means oxygen saturation also Is accurate.

If you need one of these you don't need to spend a bunch of money. This has been tested and re-tested against the best and it reads true. Excellent buy.

I got this to monitor my pulse during and after exercise, like mowing the lawn. It has proven to be very helpful, letting me know when to take a break. I like the pulse oximeter feature, too. Useful device!

It suits my current needs and it did not break the bank.

Know that you will need AAA batteries. The product is easy to use. It's fairly easy to read results. My understanding is that any reading 85 or lower is a warning to visit the nearest medical facility.