... Speaker Instructions:1, battery: internal lithium polymer batteries, when using USB power supply, you can play music while charging.2, LINE ... .2, a new micro-aluminum diaphragm speakers, bass and pure. Unique design, quality performance is excellent.3, the new concept of ... , connect your MP3, MP4, iPod, CD, PSP, mobile phone, laptop, USB drive, SD card, GPS.4, metal casing, more noble fashion, different ...