Belkin Mini 3 Button Wired USB Optical Mouse for Desktop, Laptop, and Netbook (Mac or PC) Ambidex trous design for both le-Feet or right hand Compact design for portability 4.9-Feet. Cord with USB Plug 3 x buttons, 1 x Scroll Wheel 800 Optical DPI PC/Mac Compatible Red LED Sensor Light Dimensions (Lx Wx H): 3.75-Inch x 2.09-Inch x 1.41-Inch