✅ Model: M30 pro✅ Bluetooth specification: V5.2✅ Bluetooth Profile:A2DP,AVRCP, HFP;HSP✅ Working voltage:3.1V~4.2V✅ Charging voltage:5V-1A✅ Battery capacity of the headset: 50MAH✅ Battery capacity of the storage box:2000MAH✅ Transmission distance:>10M✅ Call time:...