MP3/4 Mobile Sound Box [UP-35-US-51-4] is a stlyish MP3/4 Mobile Sound Box with built-in amplifier and battery. You can enjoy music with your friends without Headphone. This Sound Box has an retractable sound box body structure permitting the resonator to extend. This design provides better sound quality. Direct plug in design and charge by USB Port from PC or other USB power devices.

Feature List ______________________________

Audio Standard
3.5mm Audio Jack

Fit for normal MP3, MP4, PSP, PDA or Discman

- 3.5mm Audio Jack - Single LED indicator - USB Charging Cable - Built-in lithium 3.7V battery - ON/OFF Switch - Volume Control Switch

Special Design
an retractable sound box body structure
    permitting the resonator to extend.
Light-weight, compact size, easy to carry.
Colorful & Stylish
Single LED indicator
Built-in lithium 3.7V battery
OFF/Low Volumn/High Volumn Switch
USB Interface Charging Design