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the wristband has a variety of built-in sports modes, no need to add it on the phone, just wear the wristband to start exercising, and the wristband can record all your exercise data. sleep monitoring, automatically monitors and records your sleep quality, helps you better understand your sleep status and make improvements. sedentary reminder: if you forget the time when you devote yourself to it, the wristband will remind you to get up and walk, so as to wake up a better life state. 24-hour heart rate and blood pressure warning, prepared for busy urbanites, vibrating to remind you to pay attention when the heart rate is too high..syi