Be aware 30 Moneyback Guaranteed FAKE They offer 30 Money back Guaranteed, has been 15 days since the day I'm requesting a return label cus a defective device, the only way to be able to talk to that dept is by email, and they reply only at 3:00AM. I only have 3 more days to reach the 30 timeline and have no resolution, I'm afraid I'm screwed with this people with horrible customer service. Please note I'm referring to a CPAP Medical device of daily use, You can't be waiting weeks for a resolution!

At first the device worked The ordered device worked at first, but later it had problems. The computer program did not recognize it. I sent a video about the problem and corresponded with the company, who helped me, first with advice and then with a replacement device. Thank you very much for your help. I have had a heart rhythm problem since I was 12 years old, I had 3 surgeries. The device and your help means a lot to me.

O2ring wearable oxygen monitor helps to see pattern I was diagnosed with sleep apnea and assigned a Resmed ClimateLine Air 10 for Her. I additionally ordered an O2ring wearable oxygen monitor. It was a good decision because through it I can see in time what time of night there is less oxygen in my blood and how often. It has developed into a definite pattern that I will show the doctor next time.

A Great Company This is a great Company. I've used several similar products over the years, but this one is far superior. I've been using their O2 Pulse Oximeter for 6 months and it's top quality, never fails, and their customer service is fantastic. 10 Stars!

Good but please make it IP68 !!! Hi, It works, no problem. I'm dreaming of an oximeter that can be used under water for freediving training. The perfect one could also be post synchronised with Garmin connect as an external data field. We are thousands of free divers seeking for this product... best