... mobilephone,all device with 3.5mm 4.In stock Portable Sound Cylinder Speaker Instructions:1, battery: internal lithium polymer batteries, ... , on display: digital display4, support TF card USB MP3 player5, OFF/ON: switch on OFF sound off, put ON plays Parameters:Power output ... audio for portable mobile music, connect your MP3, MP4, iPod, CD, PSP, mobile phone, laptop, USB drive, SD card, GPS.4, metal ...