Bought for the heart rate sensor and built-in GPS. Due to the low quality of the sensors and software, they turned out to be absolutely useless. The price of 10% corresponds to the quality and features of 10% of harmin / epla. If you buy for notifications and a pedometer for android, then maybe not bad. With its pros: Work for a long time on a single charge The screen is visible perfectly in the sun cheap Independent GPS The glass is scratch resistant Easy to change/remove strap Some cons: Not a single application works stably, neither native nor third-party (ios). You can look at the reviews in the AppStore, they are true. The heart rate sensor works extremely poorly, it is useless for sports or health care. It works more or less accurately (90%) only if the skin is completely dry and the watch is tightened until the limb turns blue. As soon as you start training, sweat completely kills accuracy, they show 70 instead of 130. GPS ates quite infrequently compared to a phone, resulting in an error of 500 meters at a distance of 40 km. No smart alarm There is no player control or anything else. The watch can only receive notifications, no phone control (AmazTools can help a little). A very weak vibration motor, after a week you will get used to it and stop waking up from it. There is no export to Strava, only through AmazTools, when the author wakes up from hibernation every six months and sets up the application after ating the watch. A-GPS ate may take 20 minutes (usually within 5), i. E. if you took the watch before training, you can lose track of the first 20 minutes, because. the clock is not in the mood. Plus, just add clock ates here. ates come almost every week, yet never an ate has brought any improvements in functionality, only problems. The pulse sensor is covered with a transparent plastic of the worst quality, it is very scratched. Charging is very inconvenient, you need to force the watch into the connector. At temperatures below +10, the screen does not work, you need to warm it up so that it works again.
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