Dafure Porsche Car 2.4G Wireless Optical Mouse USB Mouse for Laptop and Computer Mouse Game Mice System Compatibility: Windows 98 / ME / NT / 2000 / XP / Vista / Win 8 / Linux or Mac OS Resolution: 1200CPI/1801CPI 17 automatically switchabel working frequency Dimensions (approx.): 110mm x 55mm x 36mm