Worst watch I ever had. Blood Pressure not accurate at all – not even close, heart rate totally off, battery life only last a couple of days. No warning when battery is low. Now for the Da Fit app, it is horrible. The sleep timer almost nightly started at midnight, would say I took a nap at 12 AM to 2:00 AM and that I slept 12 AM to 5 AM. It does not automatically check blood pressure, oxygen, stress – you have to click measure. So this watch is not for health. Oh and then contact customer service I asked about the sleep timer starting at midnight, they said it starts at 10 PM and that can’t be changed. So I asked why or what setting do I need to change to get the watch to track my sleep prior to midnight, no response. After trying to get the watch to work for me, it is now beyond the 30 days.. Going back to Amazfit and the Zepp app, HUGE WASTE OF MONEY AND TIME, don’t buy this watch or any watch that uses Da Fit.
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