... integral stereo portable mobile music, connecting your MP3,CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer.High density ... with many colors, several solution, for your option.This compact travel speaker system is ideal for use at the office, home, carry ... (3dB)Signal and Noise Ratio of Power amplifier: ≥80dBLoud speaker: 1.77inch(external diameter 45mm) magnetic resistant 4 OhmsPower ...