it use USB power. and This product don’t offer bluetooth. but has a headphone and mike input. / High Quality Sound? This product is Designed for user friendliness. Unique design, It is makes the high quality sound. The most valuable thing of speaker is sound. / H.Q Chipset Built-in – You can enjoy high-quality sound of baritone tone. / XBR Technology System – To minimize noise from the electric signal. / 400(W)x55(D)x60(H) / Output Power -3W x 2 (THD=10%) / Unit Size – 40 x 70mm x 2 Full Range / Impedance – 4Ohm/ Power Input – USB DC 5V / Frequency Response – 100Hz~18KHz / Digital Sound Inovation – NET
Sale Price:$29.90
[amazon-product-reviews]