Resolution: 1000 DPI for easy mouse movement Interface: USB 2.0, Plug and play Keystroke lifetime: over 8 million times Buttons:3 programmable Cable long including the USB slot: 135cm Compatibility: Windows 98 / 2000 / XP / 9X /ME / NT4.0, windows vista, Windows 7 Linux Mac OS X Package contents: 1 x Ergonomic Vertical Wired Mouse Reminds: You may not get used to the product at the beginning, due to its innovative design. Please keep using the product for a few days, and you will enjoy its convenience