... and design. This Speaker is a peripheral equipment for iPod, MP3, MP4 Mini Music Bag for mp3/mp4Convenient for carry,beautiful shape ... /DC 3VSignal Cable :20cm STR cord,3.5mm jackWorking with ipod,mp3/mp4 player,notebook and any audio player via a ... jackWhen you are mountain climbing or outside, you can take mini music bag to listen music.. feel different ! We are professional ...