1)40mm internal magnetic,high-quality aluminum and iron boron speaker
2)Power supply: 800MaH Lithium battery
3)Pulg in USB Flash Drive or Micro SD Card
4)Rechargeable lithium battery
5)Support Micro SD card, mobile phones, computers and other external sources
China supplier:
Email : fangzhengcn@hotmail.com
Skype ID : chanceller819
http://chinagift.en.ecplaza.net
ECROBOT CO., Ltd, Business Registration Number : 220-88-71747, CEO J.W.Park, TEL : +82-2-552-7676, E-mail : E-mail : Contact us Address : (Hwanghwa B/D 11F, Yeoksam-dong)320, Gangnam-daero, Gangnam-gu, Seoul, South Korea