Defender Wired Optical Mouse Rainbow gives the user the ability to work within an environment which he enjoys the most by setting the mouse color the way he likes it. It has adjustable 7-color backlight. Lock color / backlight off button allows you to pick one of seven colors or completely disable the backlight: position "On" - shimmering lights, position "Lock" to choose one color backlight, position "Off" - lights off. Optimal resolution - 1000 dpi resolution is optimal for work on 9-22'' screen. Convenient ambidextrous design and symmetrical slim shape is convenient for both hands. Whole mouse is backlit.