BluetoothRemoteGATTService: getCharacteristics() method
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
  The BluetoothGATTService.getCharacteristics() method
  returns a Promise to a list of BluetoothRemoteGATTCharacteristic
  instances for a given universally unique identifier (UUID).
Syntax
js
getCharacteristics(characteristics)
Parameters
characteristics- 
    
The UUID of a characteristic, for example
'00002a37-0000-1000-8000-00805f9b34fb'for the Heart Rate Measurement characteristic. 
Return value
  A Promise to an
  Array of BluetoothRemoteGATTCharacteristic instances.
Specifications
| Specification | 
|---|
| Web Bluetooth  # dom-bluetoothremotegattservice-getcharacteristics  | 
Browser compatibility
BCD tables only load in the browser