Specifications:
Model Number: B9
BT: V4.1+EDR
Transmission Distance: 10m / 33ft (open space)
Frequency Response: 20Hz-20KHz
Sensitivity: 100±3dB
Battery: Built-in 300mAh Rechargeable Li-polymer battery
Working Time: 8-12 hours (depend on audio volume)
Charging Time: about 2 hours
Charging: Micro USB 5V
Color: Black
Main Item Size: 6.0 * 3.6 * 1.6cm / 2.36 * 1.41 * 0.63in
Main Item Weight: 22g / 0.78oz
Package Size: 11.0 * 7.8 * 2.0cm / 4.33 * 3.07 * 0.78in
Package Weight: 55g / 1.96oz
Package List:
1 * BT Audio Transmitter & Receiver
1 * 3.5mm Audio Cable
1 * RCA Cable
1 * USB Charging Cable
1 * User Manual (English)