Features and benefits: 1. A fold which can use as sound box 2. Have very thin wafer flat implant mode loudhailer, can provide convenient volume, transmit clear voice. 3. May connect MP3、CD、personal stereo、notebook PC. And the tone is over excel the PC扴 inside sound box, can not use earphone and enjoy music at any moment and anywhere. Technical parameter Loudhailer: one Impedance: 4HM Frequency efficacy: 275HZ-20KHZ Export power: 3W Electrical Source Equipment: 3.0V(2XAA) Electrical Source life-span: 7 H Dimension: 135X135X50mm Handset Free: Yes Weight: 120g