Bluetooth 3.0 +EDR  A2DP  AVRCP 400 x 80 x75mm +++ x___x ___mm Output power 5W x 2  ( RMS ) Class D Ampli?er 5W  +5W Extra Bass Speaker Driver : Full Range : 2.25" x 2 + Passive Radiator Bluetooth Range : line sight , 10 M Audio Connections : 3.5 mm stereo line in . AC / DC Adaptor