Key Specifications Speaker System: 2.0Power Connection: USB Audio Input: 3.5mm Output Power: 6W Colour: Black Packaging: Retail Model: SP-HF180USB PoweredVolume Control 6W Multimedia 2.0 Wooden Speaker Powered by USB This powerful 6W SP-HF180 speaker is of superior sound quality, and can produce steady and un-distorted stereo bass sound. The material of this speaker housing is made of high-quality wood, which makes the appearance of the speaker very classic and high-end, so this speaker can easily match with other furniture in the house. Wooden Enclosure for Perfect Sound Wooden enclosure, simple design, compact but elegant. Powerful 6W This 2.0 stereo multimedia speaker delivers rich with 6W output. Broad Compatibility for Any Device with 3.5mm Audio Jack It works with pc computer desktop, notebook, TV, smartphones, iPhone, iMac, MP3 and other devices with 3.5mm audio jack. Simple Operation Simple to set up and operate just plug in the USB cable into a USB outlet or 5V USB charger for power. Easy Access Volume Control The in-line volume control allows you to adjust audio levels providing you soft or powerful sound. Model: SP-HF180 Black Total Power Output: 2 x 3W RMS Connection Out: USB Wired Connection Connection In: 3.5mm Audio Jack Volume Control: Yes Cable Length: 1.2m Frequency Response: 150HZ-20KHZ Sensitivity: 600mv +- 100mv Signal to Noise Ratio: >70dB Driver Size: 2\" Impedance: 4 Ohm Colour: Black Dimensions: 77 x 150 x 100 mm Weight: 650g