it was run out of power after the long delivery.Press and hold the circular mark at the bottom of the screen to turn on the device, and the watch operation is also achieved by pressing the circular mark(The screen cannot be swiped, it can only be operated by short or long pressing the circular icon) 2. Before using, scan the QR code on the manual to download the app and connect it to the watch with APP. 3. Please always authorize app access to all phone functions and always let it operating on. Note : 1. As the firmware is continuously updated, the user interface will be updated accordingly. The images are for reference only, and everything is subject to the actual product. 2. Please download APP firstly, and bind the watch, Do not use the mobile phone wireless to directly link the watch. If it is already connected, please delete the matched watch from the mobile phone wireless matching...