Speaker BT WK SP-100 Black

Bluetooth Chip: JL2.1+EDR version
Transmission distance: 10M
Built-in battery: 3.7V 500mah battery
Working voltage: 3.7V (3.2-4.2V)
Freduency: 2.402GHz-2.480GHz
Charging time: 2.5h
Standby time: 60 days
Music playing time: 5h