I downloaded the HeroBand III APP easily into my Android smartphone. I charged the watch right after receiving it and after two weeks of daily use the battery indicator shows that about 2/3 of the charge is still remaining.The manual is comprehensive and easy to follow. I chose the American system of units, but the metric system can also be used. There are a number of watch faces to choose from. I am using the analog watch face that looks like an old style dial with 12 markers at 5 minute intervals and minute makers too. The functions of the watch all work well. I use the following functions: steps; calories burned; distance in yards or miles; blood oxygen saturation level; blood pressure; heart rate and sleep time and weather. These readings are accurate. The message notification feature works perfectly. My son has an Apple smartwatch costing 10 times more than this watch. For the things I am interested in, his watch is no better than mine. I heartily recommend this MuGo Smart Watch.
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