... OEM&ODM oders accepted CE&FCC&ROHS certified Vibration Speaker with Rechargeable Li-batteryFeaturesMini vibration SpeakerMagic 360 unimpededRemote controlCan read TF cardBuilt-in ... 5V±0.5V Inlayed Lithium battery:600mAh Maximum output power:5W Frequency Range:80Hz-18000 Hz Power Source:PC, MP3, MP4 ... 3.5mm audio cable,another for USB cable)User manual Vibration Speaker with Rechargeable Li-battery