I am selling my Creative D100 speaker since I no longer need it. It works perfectly fine - you can use it with 4 batteries or connect it with the USB cable to a power source. 6W RMS Per Speaker 20W RMS Subwoofer Wired Volume Control From a range of up to 10 meters from the speakers, wirelessly stream music from any Bluetooth-enabled device such as mobile phone, notebook, iPhone or iPad. You can also listen to music from non-wireless MP3 players via the integrated AUX-in port. Length: 13,1" Height: 4,5" Depth: 5"