Function: RGB LED, Bluetooth, hands free, line in, USB charging, TFT play

Bluetooth version: V4.0 -BK

Support A2DP, AVRCP, headset and hands free profile

Speaker: 40mm x 2, 4 Ohms 

Loudspeaker output: 5W x  2

With built-in rechargeable Li-ion battery 3.7v / 2000 mAh

supporting 10 hours playing

Mini USB port for charging

Built-in MIC, answer/reject your phone

Source: bluetooth, Aux in