... 3.earphone function 4.replaceable battery 5.Mini Speaker with unique design ---- for iPhone Mini Speaker with unique design ---- for iPhone ... world.Mini, portable digital speaker for your convenience, connecting to your MP3,MP4, CD, DVD, iPod, iPhone, GPS, PSP, mobile phone, ... 3W+3W) THD=10%Frequency response: 150-18000HZ(±3Db)Signal and noise ratio of power amplifier: ≥80DbLoud speaker 1.77 inches ...