Wireless Wrist Pulse Oximeter and O2 Monitor - Checkme O2 Sleep Pulse Monitor with Vibration Alarm and LCD Screen

Stylish and also comfortable device for overnight use, both wrist band and thumb sensor (although not sure how long the thumb sensor would last without securing with medi-tape).Vendor interacted well.SO, why the low rating?If you are concerned about opening up your medical data to the whole world, this device has potential problems, even though the seller assured me that the manufacturer told him that it does not collect and send personal data.There are discrepancies between which permissions the App asks for in Google app store and when it is installed those permissions are very different. Also during reinstalling it the "nth" time, it asked for permission to share my contacts with it. Why would it need those data???I did not test it properly as a consequence.

This is a great product and life changer.It's like having a cardigan angle looking after you when you sleep and can't control your situation watching over you while you sleep.When you're oxygen levels in your blood go down to 90% it vibrates your finger to make you aware.It showed me I had a problem and I now where a snore guard and this every night.My life has changed so much for the better.I wake up feeling refreshed and ready to get up.Life changer. Perfect