... your MP3, MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, etc.2) This speaker can be deemed as perfect ... of audio boxes.3) New mini aluminum vibration film loud speaker, which has clear alt and pure woof. The unique design ... ) Signal and noise ratio of power amplifier:>=80db 4) Loud Speaker: 1.77 inch (external diameter 45mm), Magnetic resistant 4 Ohms ...