I have tested every function- bp- hr- ekg- o2- sleep- all work fine- glucose I have some doubts about its accuracy - not clear how they measure and calculate this number- impressed by quality of EKG

Good capabilities, not sure on blood pressure accuracy. Easy to pair to iPhone.

The step count appears to be very inaccurate. Watch band was comfortable, changed it for a stretchy on. Battery seems to fade quicker than anticipated. Most functions are close to my medical tests. So far I am pleased. Will continue to monitor it.

I received the watch about 8 days after ordered, since then I have tested all the monitoring functions and have to say it's very accurate. The only concern is the battery life, it lasts about a days and a half before needing charging. Have to believe the drain on the battery has to do with the monitoring all functions every 5 minutes. Wish there was a way to change the time between monitoring, I personally don't need my blood pressure or body temperature tested every 5 minutes, every 60 minutes would be more than efficient and should save battery life. Overall great watch, great price, just hope they give an monitoring time option sometime down the road.

Bought this for my brother who has Parkinsons to mostly to keep track of his heart, blood oxygen and sleep pattern. He loves it except to return to the main menu he has to tap all the way back through the steps.