A specially designated of Double-side input plug that allow you enjoy the listening wirelessly, while connect to the MP3 (especially for the  “flash memory type” MP3).

A USB output connector that allow you to enjoy the listening and charge to the MP3 simultaneously.

Battery slot for outdoor use.

A stereo output jack for privacy.

Astonishing bass and clear accurate sound from high precision drives.

Lightweight 10oz speaker for maximum portability.