I bought it only for the sake of controlling heart rate while running, which he copes with very poorly. The pulse measures normally in a calm state (which is rarely needed), when running, without notifying me about it, it stops reading (which is most annoying). On iOS, the application is not finished, like all Chinese software. In general, for such money, a good toy, it looks decent on the hand) And the charge is enough for two weeks! With autonomy order. Nothing is visible in the bright sun.
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