Handheld Pulse Oximeter Fingertip with Body Temperature Function Blood Oxygen Saturation Health Monitor 3.5inch LCD Display Probe Optional Yonker YK-820B - Adult(Lithium Battery)

Awesome product and very easy to use.

It works well, however the adult adapter it came with does not work just after one use. Not sure it is broken or there's a simple fix, but I have only been able to use the infant one I purchased separately.

My son (13yr )has many health issues. And this oximeter has truly made our life easier and safer. I can sleep knowing if chokes in his sleep or his breathing becomes labored. The fact that it is so compact makes traveling and spot cheeks easy and quick.

Device would power on, but nothing would show up on screen. Would not register pulse ox or heart rate