System requirements Windows 7, 8, 8.1, 10 Mac OS X 10.8 or later USB Port One AA battery Specifications RF Frequency 2.4 GHz Number of buttons 3 (left, right, middle button with scroll) Resolution (DPI) 1000 Sensor engine BlueEye Colors Calm black, Elegant white, Ocean blue, Passion red, Spring green Dimensions (W x H x D) 58 x 100 x 39 mm (2.28 x 3.94 x 1.54 inches) What`s included NX-7005 USB Pico receiver AA alkaline battery Multi-language user manual