Wireless optical mouse with 3 buttons and a scroll wheel. The mouse has a sensor with a sensitivity of 1000 dpi. Designed for home and office use. Wireless mouse allows for comfortable use without a cable. Perfect for notebook or PC. Compatible with Windows 98/ME/2000/XP/Vista/7/8/10 operating systems. Properties: Transmission: Wireless Technology: Optical Frequency: 2.4GHz Range: up to 10 m USB port Resolution: 1000 dpi Number of buttons: 3 Number of rolls: 1 Button under the roller: Yes