TeckNet 6-Button Ergonomic USB Wired Optical Mouse for PC, Laptop and Computer, 1600/1000 DPI TeckNet USB wired optical mouse with Tru-Wave technology provides precise and smart cursor control over many surface types. Ergonomic contoured shape gives you all-day comfort. Over 5 million keystrokes test ensures long lifespan. Simply plug and play. 4.9ft (1.5m) cord gives you freedom to move freely. 2 Adjustable DPI: 1600/1000. Back/forward buttons design meet your demand of daily office working and personal preference. Works with Windows 98, ME, 2000, XP, VISTA, 7, 8 & 10. Package Contents: 1 x TeckNet Wired Optical Mouse, 1 x User Manual, 1 x 18-month Warranty Card.