1.Can connect to computer, PC, CD, MP3/MP4, mobile phone, PSP,GPS... ... and power supply manners including battery, computer USB, adaptor DC-5V allow you to enjoy the music, for your ... 4Ohmsl Power supply: 5V/1000Ma AC power adapter, computer USB power rotate connect line(optional)l 3.5mm ... , please show your opinion. We will be grateful to what you do.Please contact us before leaving any negative ...