... .competitive price Portable Gift Mini Speaker (Use with MP3, MP4, CD, DVD, Ipod, mobile phone, laptop, GPS, PSP) Specifications:Out ... ratio of power amplifier: =80dB Loud speaker: 1.77" (external diameter 45mm). Magnetic resistant 4Ohms Power supply: 5V/1000mA AC ... new concept integral stereo portable mobile music, connecting your MP3, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer. ...