HIGH SPEED: 4 Adjustable DPI levels (3600-2400- 1800-1200) can freely change the speed and perfectly meet the needs both in home and office SIMPLY PLUG-AND-PLAY: Plug the nano device into your computer USB port and start using your mouse right away RELIABLE AND DURABLE: The high-speed precision optical mouse ensures a fast response and smooth operation POTABLE DESIGN: The compact size enables it to be taken wherever you want, for use on a computer whether at home; at work or anywhere else COMPATIBILITY: Windows 2000 / 2003 / XP / Vista / Win7 / Win8 / Win8.1 / Win10