(1)Bluetooth version:Bluetooth v2.1+EDR
(2)Working Range: 10meter
(3)Built in 800mA rechargeable battery
(4)Working time: 4-8hours
(5)Support A2DP V1.2, AVRCP V1.4 profiles;
(6)Support Line-in and hand-free, with internal mic
(7)Distortion: <0.5%
(8)Frequency response: 20HZ-20KHZ
(9)Loudspesker output: 4Ω3W
(10)STN: ≥85±2dB
(11)With LED indicating when working
(12)Unique design with good sound quality