... your convenience, connecting to your MP3,MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, Hi- ... 4A-1A) power adaptor, use USB power supply.l Charging: Use computer USB power or DC-5V adaptor as power supply and charge, when power is off, ... external diameter 45mm) Magnetic resistant 4Ohmsl Power supply: 5V/1000Ma AC power adapter, computer USB power rotate connect line(optional)l 3 ...