charge for IOPD   AM/FM Radio  Snooze and sleep  battery support  VIdeo-out for iopd   USBtransmission between IOPD and pc
 output:5.5w*2   impedance:3ohm  piwer: dc12V   SPEAKER UNIT :2*2  SIZE: 266*189*73MM
 weight:1.29kg
 speaker for any iops with dock connector including iopd ,iopd mini .iopd nana and iopd video  FM radio
 clock/alarm   build-in 2.0 amplifier