Wireless optical mouse designed for desktop and notebook computers. Has a functional, easy to transport with a laptop, space-saving, difficult to accidentally damage Nano receiver. It works at 2.4GHz technology. Working range up to 10m. Quiet scrolling wheel. Thanks to the ergonomic shape of the mouse perfectly fit to the hand and does not cause fatigue during work. Interface: 2.4GHz DPI: 1200 DPI Sensor: Optical Buttons number: 4