Color White Material ABS + Electronic components Quantity 1 Piece Shade Of Color White Frequency Response 200Hz~12KHz Impedance 4 ohm Interface 3.5mm Supports Card Type MicroSD (TF) Max Extended Capacity 8GB Radio Tuner No Built-in Battery Capacity 300 mAh Plug Specifications Others Certification CE FCC RoHS Other Features Output power: 24W; Supports MP3 / WAV music format; Input: 3.7V / 300mAh; Output: 4.2V ±0.05V; Built-in rechargeable 300mAh Li-ion battery; Charging time: 2 hours; Working time: 3 hours; 3.5mm jack allows you to connect to portable audio equipment such as cell phone / MP3 / MP4 / PC / CD / PSP etc.; Comes with hanging strap 3.5mm audio cable and USB charging cable Packing List 1 x Speaker (13cm-strap) 1 x USB cable (71cm) 1 x Audio cable (30cm)