MT-BTS, Bluetooth stereo speaker . CE/Rohs , MOQ:1000pcs Enable to play music wirelessly from the Bluetooth A2DP enabled player, such as mobile phone, ... 5mm audio cable volume control on the wire Bluetooh version Bluetooth V2.1+EDR, Class 2 Rechargeable battery 1500mAH Li-polymer ... Output power: 2W*2CH Bluetooh profiles A2DP,AVRCP Working time 3hrs Charging time about 2.5hrs FOB ...