... USB,adaptor DC-5 Music Angel Micro SD/TF Mini Speaker JH-MD061)The mini audio box ... with new concept integral stereo portable mobile music, connecting your MP3, ... MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, notebook computer, etc.2) This digital speaker ... noise ratio of power amplifier:>=80db 4) Loud Speaker: 1.77 inch (external diameter 45mm), Magnetic ...