Ven Dens Bluetooth Handsfree Wireless Business Earphones (VD-BT004)

Bluetooth spec: V4.1+edr
Transmission frequency: 4.2GHz
Support mode : A2dp1.2/avrcp1.0/HSP/hfp1.5
Transmission power: Class 2
Working distance: 10m
Battery capacity: 50Mah li-ion battery
Talking time: Rough 4 hours
Standby time: Tough 120 hours
Charging time: Rough 1.5 hours (Micro 5pin)

Please keep the Bluetooth earphones powered off and protect them safely, The battery may get damaged and its working life reduced if stored in heating cars, direct sunlight or high temperature ( over 40 / 140 F ) for a very long time. Get the headset and accessories away from the rain or any other liquid