A-jazz Green Hornet 2000dpi 6 Bottons Wired USB Optical Professional Gaming Mouse /Color:cinnamon Resolution : 800/1200/2000 CPI; key number : 6 keys Product Dimensions : 127*70*30mm; weight151g Interface : USDB1.1/2.0/3.0;Connect Line : High anti-interference magnetic ring spinning line Button life : more than 5million The tracking system:Optical,Red /Blue