HYTOBI MEM50-BLU 3-Button USB Wired Optical LED Mouse, Black/Blue Trendy LED lighting when plugged in and computer is on Here's how you set it up Measuring in at 4 x 2.5 X 1.5 (Lxwxh) with a cord length of 48 inches (4 feet) and weighing in at 2.4oz this mouse is sure to own the ring They are compatible with windows 2000, xp, vista, 7 and 8 and mac os