Features:   Perfect Addition for Computer:Built-in 2*5W balanced stereo speakers, the ELEGIANT SR600 computer speakers can provide a stereo clean sound and you enjoy the music or game without distracting distortion, interference or noise.  Colorful LED Lights:It automatically changes different colors during music playback. Please rotate the knob to turn on the lights. When you are listening to the rhythmic music or playing the intense games, the light effect would be more strong. （Note:you can turn off the lights by patting the main speaker）  One-button Design for Easy Use:On / off switch and volume control using a simple knob on the front of the speakers. So you can adjust the speaker easily and well. No more complicated operations, just use the knob to control all.  Plug & Play:USB powered and no drivers needed. All you need is to plug the usb cable and the 3.5 mm cable, then everything is ready to go.  Compact & Space Saving Design:With its mini size 87 * 92 * 133mm, it fits perfectly under the screen or on both sides of the computer and occupies no extra space on the desk. This 2.0 speaker system is an ideal choice for your computer, laptop & notebook     Specification:  Product Dimensions:6.3 x 5.51 x 4.13 inches(2 speakers);  Item Weight:1.6 pounds;    Package Included:  2 X speakers;    FAQ:  Question:How to control the volume of speakers for desktop computer?  Answer:You can turn On / off switch and volume control using a simple knob on the front of the speakers. just use the knob to control all.  Question:Can this pc speakers control the lights off?  Answer:Yes, you can turn off the lights by patting the main speaker.   Question:What is the size of this computer speakers, what led colors are there?  Answer:The size of the speaker is 3.42 *3.62 * 5.23inches. The color of the LED light is multicolored and varies randomly. Create a great atmosphere.