The wooden cabinet is designed as a whole, so as to eliminate the distortion caused by resonance and box sound, and make the sound quality more and pure and natural. Breathing LED Lights: This computer speakers built-in RGB lighting,which create a romantic and relaxing party/Music/games/ and video .Note: The lights color will change cyclically,you can't choose to control the light color. The inner wall of the sound guide hole is , and the low-frequency sound wave is released smoothly, which can effectively reduce the distortion caused by sound friction The -size woofer is supercharged to the ground and has a strong bass effect Easy to Set Up & Widely Applicability: Powered entirely by USB and connected to your devices via a universal 3.5mm AUX-in cable, eliminates the need for a wall socket.3.5mm audio interface, suitable for most music players,,phone,tablet,MP3 player or other device. Output power: 5W+3Wx2 Power supply: USB DC5V Speaker size: 3 inch + 2 inch * 2 Volume control: knob control panel Signal to noise ratio: 85dB Frequency response range: 20Hz~20KHz Sensitivity: 800mV Colour:black Material:wooden Size:180 x 120 x 145mm Package Contents: 1 x main speaker 2 x sub speakers Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.