bestsell Smart Bracelet Sustained Heart Rate Smartwatch  (Black Strap, REGULAR)

Wear Correctly Best to wear with ulnar stem protrusion According to the adjustment of hte size of the wrist ; Brachial buckle . The sensor should be close to the skin to avoid moving charge the bracelet . For the first time , ensure that the power of the bracelet is normal . If the low power can not be turned on normally , please connect the charger to charge the device . The bracelet will be turned on automatically . Install bracelet APP on mobile phone Scan the following two-dimensional code or enter the APP store to download and install APP System requirements : Android 5.0 and above ; IOS 9.0 and above ; support bluetooth BOTH ANDROID AND IOS BAR CODE IS GIVEN IN THE MANUAL BOOK Device connection For the first time , you need to connect the APP for calibration . After the connection is successful , the bracelet will automatically synchronize the time . Otherwise , the step and sleep data are not accurate . After the pairing is successful , the APP will automatically save the Bluetooth address of the bracelet . The APP will open or run in the background and will automatically search and connect the bracelet. Make sure to give full accessto the app's background to run and read contact information when installed or in your phone system settings . Handband function description When the device is switched off , touch the function key for more than 4 seconds to enable the device to turn on . At the Bluetooth address interface of the bracelet , press 2 seconds to enter the shutdown interface . Select ON 3 seconds exit the shutdown page . Select OFF 3 seconds to shut down the bracelet . In the device boot state , touch the short press function key to light the screen ; Flashband default clock page , touch short press function key to switch to view different pages , no operation default 5 second screen Switch to the heart rate and blood pressure interface to start testing , heart rate blood pressure 50 second timeout automatic screen (heart rate and blood pressure need bracelet hardware support ) . Clock interface After synchronizing with the mobile phone , the bracelet will automatically adjust the time ; The standby interface length can switch different clock interfaces by 2 seconds . Step Number of movement steps Wear a bracelet to record the number of movement steps per day to view the current real-time steps .