Product number:M6 PLUS Bluetooth version:Bluetooth V5.0 Battery specification:Headset 3.7V/40mAh；Charging box 3.7V/300mAh Support mode:HFP/HSP/ A2DP/AVRCP Sensitivity:105dB ±3dB S.P.L at 1KHz Transmission distance:10 meters (in an ideal environment without any major obstacles) Play time:About 2.5 hours Call time:About 3 hours Standby time:About 100 hours Charging time:Charge the charging compartment for about 2 hours, and charge the headset for about 40 minutes Charging box to charge the headset:About 2.5 time Temperature measurement 1. In the case of sufficient charge in the charging bin, contact the sensitive part of the body temperature measurement with the temperature measurement probe. 2. Long press the button of charging bin 3. After 5 seconds, the LCD of the charging warehouse will enter the temperature measurement display. The whole process of temperature measurement will take 8 seconds to 10 seconds. 4. After the temperature monitoring is stabilized, the LCD will display the temperature of the person 5. Press the charging bin to switch the Fahrenheit and Celsius temperatures.