pecification:Model number: B6Bluetooth: V2.1Transmission Distance: 10m / 33ftBattery: Built-in Rechargeable Li-polymer battery(600mAh)Working Time: 8 Hours (depend on audio volume)Charging: Micro USB 5V/0.5AAudio Port: 3.5mmColor: BlackMain Item Size: 9.7 * 5.8 * 1.2cm / 3.82 * 2.28 * 0.47inMain

pecification:Model number: B6Bluetooth: V2.1Transmission Distance: 10m / 33ftBattery: Built-in Rechargeable Li-polymer battery(600mAh)Working Time: 8 Hours (depend on audio volume)Charging: Micro USB 5V/0.5AAudio Port: 3.5mmColor: BlackMain Item Size: 9.7 * 5.8 * 1.2cm / 3.82 * 2.28 * 0.47inMain Item Weight: 38g / 1.36ozPackage size: 12.5 * 7.0 * 3.6cm / 4.92 * 2.76 * 1.42inPackage weight: 116g / 4.09ozPackage List:1 * 2 in 1 Bluetooth Audio Transmitter & Receiver1 * 3.5mm Audio Cable1 * AV Cable1 * USB Charging Cable1 *  User Manual