Rato GENIUS NX-7000 Wireless 2.4GHz BlueEye "Black"

Specifications -RF Frequency 2.4 GHz -Number of buttons 3 (left, right, middle button with scroll) -Resolution (DPI) 1200 -Sensor engine BlueEye -Color Calm black -Dimensions (W x H x D)58 x 100 x 39 mm (2.28 x 3.94 x 1.54 inches)