The model performs all the important declared functions. With constant heart rate measurement and regular viewing of notifications, the charge lasts a week. Charges for an hour and a half. Displays all notifications from the phone, a maximum of 25, after viewing they are immediately deleted. The pedometer and heart rate monitor have an error, but are still quite accurate. Compared in different modes with Mi Band, Meizu Bong 2HR and Welltory readings from iPhone. Meizu's pulse lies and greatly overestimates the steps. But Mi, Garmin and Welltory differ in heart rate by 2-3 beats at rest and by 5-7 in motion (Welltory does not measure at all in motion). In steps, Garmin shows 1000-1300 more than Health in iPhone. Mi overstates godlessly.