Ergonomic design, fit the palm, delicate hand feel, comfortable to use The scroll is non-slip, wear-resistant and durable 3 DPI levels for adjustment, accurate positioning, smooth operation Just plug and play, no need to download any driver or APP, easy to use Compatible with Windows 2000/NT4.0/XP/NET/VISTA/7/8/10, for Mac OS X10.8 Perfect for office, traveling and home use Specification: Product type: wired mouse Connection with the computer: wired Photoelectric resolution: 800/1200/1600 DPI Key: 3 keys Cable interface: USB Ergonomics: support Direction of roller: four-way rolling Features: slim, gaming, ergonomic, mini Cable length: 1.6m