Portable Speaker With USB/SD card reader Portable Speaker With USB/SD card reader Output power: 3W*2 Voltage: 5v Drive Units: 4@*2 With USB/SD card ... : 20Hz-20KHz Dimensions(mm): W170*H300*D140 Have radio function, with USB/SD card reader Function switch; 1. Remote Window 2 ... channel+ 6. EQ Model key 7. USB 8. SD * Packing Content: Speaker, ,remote control,USB Power Cord,2.5mm docking, nuokia docking ...