I have used it for sleeping out of curiosity as well and it was comfortable on my ring finger through the night. Kryger says the circul+ ring has been particularly helpful in measuring how blood oxygen changes during sleep in patients with Long COVID, cardiovascular disease, and sleep breathing problems. Compared to my old unit, my O2 readings are identical, so either they're both off or both accurate, but the readings seem reasonable and consistent and the heart rate sensor matches my Polaris HR belt, so that checks. Jumper Fitness Tracker, Activity Health Tracker Waterproof Smart Watch Wristband with Heart Rate Sleep Monitor Pedometer Step Calorie Counter for Android. It appears to be very good quality and does exactly I need it too. Oura, which bills itself on its website as the most accurate sleep and activity tracker, sells its ring for 299 and up, which puts it on par with the Apple Watch. 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. My old unit required a CR2 battery, but this unit lasts longer than I can fly in a day, and then some.
And then also - no more batteries to replace. 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. This blog gives you a comprehensive overview of the four best Sleep Tracking Rings: Oura, Motiv, GO2SLEEP, and THIM. Best mattress sleep tracker - Withings Sleep. I'm a pilot and wanted to get an oximeter to replace my aging finger clip style oximeter. Oura uses every metric, while most wearables only use a few body signals to determine your sleep quality and sleep stage. Best overall sleep tracker - Fitbit Sense 2. Checkme™ O2 72-Hour Wrist Oxygen Monitor.
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