... length is 275 MM(6) Sensitivity: 91dB-SPL,1w,1m ((7) The most loudly output: 114 ... dB-SPL, 1 m (pink noise); 116 dB-SPL, 1 m (IEC noise)(8) ... CD, the computer, all mobile phone, through the audio line played music.3. Built-in Lithium battery ... gold Included AccessoriesAC adapter (Option)USB cable3.5mm Audio cableRemote ControlInstruction manual Packing:Color box packing: 39.5 ...