1.Producer marketing 2.OEM/ODM is welcomed 4.2200mAh Re-chargeable battery 4.adopts wireless audio interaction technolgy 2013 ... newest anti-magnetism bluetooth speaker Working principle:Wireless audio interaction technology is another wireless music transmission mode ... No need Bluetooth, Wi-Fi, configuration, cable, connector .2.Sterling audio in a super-compact design Mini, portable amplifier .3. ...