I'm a pilot... A couple features I really like are the vibrating alarm, which I set to high when flying to alert me to before hypoxia sets in... I noted that it tracks my oxygen well as I climb to altitude in my unpressurized airplane and had a little fun experimenting with adjusting my oxygen bottle feed at 12,500' MSL from 90% to 98% blood O2 level...
Not as fancy as far as software goes, especially compared to some of the more well known smart watches, but the hardware is ahead. The aircuff actually works and is the only wearable I’ve come across that offers this level of accuracy.
I use this sensor connected to my watch w ANT+ and my phone app w BLE. It’s accurate, and the ability to set Heart Zone alerts w vibration is excellent.
My father has dealt with COPD for years now and we’re so happy to have found Wellue and this Oxygen machine. He had been renting them through medical companies and as you know those monthly bills pile up... It’s easy to use and the shipping was fast! Extremely happy customer here. Thank you Wellue!!