text: **1.9 Heart rate**
  
  After you wearing the smartwatch correctly, you can measure heart rate when you enter the 
  heart rate function. If you don’t wear the smartwatch properly, it will remind you to wear firmly 
  for the measurement. 
  
  **1.10 ECG**
  
  After you wearing the smartwatch correctly, and enter the ECG function(you need to turn on the 
  ECG interface in the app, you can have single measurement at a time. The data of ECG will be 
  saved in the mobile phone. This function should be used with the app. 
  
  **2.0 My QR code**
  
  Connect the watch to the APP, find My QR Code in the APP, select WeChat/QQ/Alipay and other 
  "Receive money QR code" to sync to the watch (Please follow the instructions of the app to 
  operate the function). 