2.0 Bluetooth speaker Suitable for computer,laptop or other. Can be remote control Use by USB liner or transformer. Bluetooth 2.0 ... 2 Distortion: 0. 5%@1WSeparation: ≥40dB(1KHz)Frequency: 80Hz – 20KHzS/N: ≥70dBDimension (WxHxD): 30 x 10 x 12 cmFunction Spec.: Bluetooth, VOL+/-, POWER,USB ... Promotion gift ,LED USB flash drive,Mini Speaker act.Payment Term*For sample, you can pay for us use PAYPAL or ...