Mini vibration speaker with Rechargeable built-in lithuim battery OEM&ODM oders accepted CE&FCC&ROHS certified Vibration Speaker ... 360 unimpededRemote controlCan read TF cardBuilt-in rechargeable Li-ion Battery.Audio Source: PC,MP3,MP4,MID,CD,DVD,Mobile phone,iPhone ... : DC 5V±0.5V Inlayed Lithium battery:600mAh Maximum output power:5W Frequency Range:80Hz-18000 Hz Power Source:PC, MP3, MP4, MD, CD ...