When the device is turned off, touch and hold the function button for more than 3 seconds to turn the device on In the Bluetooth address interface of the bracelet, press and hold the 2-second wrists watch to turn off the phone. A short press will exit the shutdown page. Bracelet reset device This function will clear all data of the bracelet (such as step counting). Under the power-on state, touch the short press function key to light up the screen. Whether the default clock page of the bracelet, press the short press function key to switch to view different pages, no operation default five-second Screen. Switch to the heart rate three-in-one interface to start the test, heart rate three-in-one interface 60s timeout automatically off-screen (heart rate and blood pressure need bracelet hardware support).