CoolerMaster MasterMouse MM830 Pixart RGB Optical Gaming Mouse (MM-830-GKOF1) - Mouse Proessor 32 bit ARM Cortex M0 64Pin, 6 Mouse Buttons, Mouse Grip Type Palm/Claw, On-Board Memory 4MB, Mouse Dimensions 128.1 x 67.4 x 43.4 mm / 5.043-inch x 2.654-inch x 1.709-inch, MM Series, Mouse Sensor PixArt PAW 3335