Widely compatible with devices USB power supply mode, 3.5mm audio interface, compatible with most electronic devices on the market The sound is not delayed. Listen to to identify your position, retreat and attack, and sound is not delayed. Create your path to super god Surging bass releases the sound of music, 50mm large speaker passive diaphragm and mono speaker combination improves low sound performance, allowing the bass to flow out clearly, giving you a better experience Small size, high volume, dual-speaker stereo mini that doesn't take up much space on the desktop 360 stereo surround. The left and right speakers sound at the same time, with clear layers, putting you in a surround sound field Name:Computer Speakers Input power: DC5V Speaker specifications: 50mm*2 Frequency response:25Hz~20KHz Signal-to-noise ratio: 80db Power supply : USB DC 5V Input interface: 3.5mm stereo input Adjustment form: wire-controlled volume adjustment Colour:Black Material:plastic Package Contents: 1 Pair x Computer Speakers 1 x USB Cable 1 x Chinese and English instruction manual Only the above package content, other products are not included. Note: Light reflection 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.