turn on your phone's Bluetooth before pairing Turn on: If your watch is off, press and hold the Side Button for 3s until the face appears (you might see a black screen for a short time first). Setting: Press and hold the Side Button for 3s until the face apears and the watch vibrates (you might see a black screen for a short time first); Choose and confirm your system language. Swipe up to go to "Use Veepoo Health" > "Download Veepoo Health", scan the QR code or search "Veepoo Health" in App Store or Google Play to install it on your phone. Swipe up your watch display to view your watch's name and MAC address. Open "Veepoo Health", sign in a account and follow the instructions. Search your watch's name in "Veepoo Health" and choose to pair. You need to allow the "Bluetooth" ( If you use an Android device, "Location" permission is also needed.) As you see "Hello" on your watch display, press the Side Button to finish setup Quickly change settings: Control Center gives you instant access to silent mode, Do Not Disturb, Find Phone,Screen Dsplay ,camera ,Mac and version ,Settings. To open Control Center, swipe from up to bottom. App Download: Scan the QR code or search "Veepoo Health" in App Store or Google Play to install it on your phone.