Bluetooth Version: V5.0 JL 6936D
Support Protocol: A2DP/HFP/AVRCP
Transmission distance: 10 meters
Battery capacity: 50mAh/300mAh
Charging voltage / current: 5V / 1A
Play / talk time: about 3 hours
Charging time: about 1 hour
Standby time: 40 hours
Speaker impedance: φ10MM 32Ω
Microphone sensitivity: -42Db
Working temperature: -10-50 °C"