E-3LUE MAZER EMS616BKAA-EU Wire USB Gaming Mouse Dimensions: 131*70*47 mm Mouse rate of return: 250/502Hz Weight: 154g Product Compatibility: Windows 95/ 98 / 2000 / ME / NT / XP / Win 7 / Win 8/ Vista / OSX 10.4 Resolution: 500/1200/1800/2502 DPI