Second revision of the review. After a couple of months of use. Communication with phone: I couldn't connect the bracelet with my Chinese Leeco. The support said that Apple, Pixel and Samsung devices are currently supported. I got a tablet from Samsung. Earning PAI: You get PAI points for being in high heart rate zones, the higher the heart rate, the more you accumulate. The cool thing is that the bracelet counts non-step activities, like free weights at the gym, or push-ups, or pull-ups, or dancing. There is a feature that it is better to enter the bracelet into increased activity mode on your own (hold down the switch button), in it the bracelet immediately starts reading the pulse every second. If you do not activate the mode manually, you risk that your bracelet will miss the lion's share of the activity (more details in the shortcomings) and will not earn points. The most fierce minus is the crooked software, which loses points during synchronization, especially when you come home with the feeling that you have plowed, and the program stupidly ignores this data, there is no firmware that corrects this cant yet. The second moronity is an overestimation of the pulse in an active fashion, sometimes it shows absolute nonsense and can give you 15-30 extra points out of nowhere for the whole week. Is it worth taking: If after a week of use I wanted to advise it, now the dampness of the software leaves disappointment, it seems to me that I was in a hurry with the purchase, not listening to other negative reviews, believing that this watch really does its job well. If you are interested in PAI and have faith in the concept and this company, you can buy it. If you just need a pedometer and a heart rate sensor with standard functionality, then it makes sense to take something else, or not spend money on bracelets at all. Outcome: PAI is an interesting concept, but the implementation of the software is crude. The developers did not finish the normal software for the release and released a raw test product on the market. My firmware has not been ated for a couple of months (1.1.0),
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