Technical parameters:
Bluetooth protocol: 3.0+EDR
Transmission distance: 10 meters
Frequency range: 140Hz-20kHz
Rated power: 3W
Rechargeable battery: 400mAh lithium polymer
Battery voltage: 3.7V
Full charging time: about 3 hours
Charging voltage: 5V
Power input: micro-USB (5V/500mA)
Net weight: 240g
Dimension (D x H): 79 * 76mm 
Highlights:
Bluetooth wireless music streaming
Built-in microphone for hands-free phone answer
Clear sound with powerful bass
Support devices featuring 3.0+EDR Bluetooth/3.5mm audio jack
Compatible with all standard USB chargers (PC, car, mains)