3-Button USB Mini Optical Scroll Mouse w/Color Phasing LED (White) 3-Button USB Mini Optical Scroll Mouse General Features: Color: White Compact, miniature design Color changing LEDs: Red, Green, Blue, Purple, and Yellow 3-button design Scroll wheel (acts as third button) Optical technology 800 dpi USB interface: 4.5-foot cable length Ideal for notebook computers Unit Dimensions: 1.1 x 2 x 3.5-inches (H x W x D, approximate)