ART wireless optical mouse with 3 buttons and a scroll wheel. The mouse has a sensor with a sensitivity of 2400 dpi. Designed for home and office use. A comfortable, wireless mouse allows for comfortable use without being limited by a cable. Compatible with Windows 98 / ME / 2000 / XP / Vista / 8 / 10 operating systems. Properties: Sensor: Optical Number of buttons: 3 Number of rolls: 1 Profile: Universal Resolution (max): 2400 dpi Connection: Wireless Interface: USB Power supply: AAA batteries / rechargeable batteries Button under the roller: Yes