GRTS Ultra Smartwatch (Black Strap, Free Size)

* Wear Correctly * *Install the watch app on your phone* Scan the QR Code or enter the App Store. Application Treasure to Download and Install the APP * Device Connection * For the first time use, you need to connect the app for calibration. After the connection is successful. The watch will automatically synchronize the time. connect the watch Successfully, you can start the heart rate measurement on the APP, and viwe the historical heart rate data. The watch comes with NFC function. The sensing area is Located in the Center of the Screen, Which is equivalent to a blank access Card you need to copy the access card information to have the corresponding access card function, which is convenient for Travel, Multiple access card can be superimposed { support IOS "Shortcut Instruction" recognition function on the Mobile Phone}