High-end optical engine for precise positioning. 4-speed DPI optional, adjustable mouse movement speed . Button life up to 3 million times, High definition(3200 DPI) optical tracking delivers more responsive cursor control. Compatibility – Windows XP / Windows7 /Windows 8 / Windows10 High-end optical engine for precise positioning. 4-speed DPI optional, adjustable mouse movement speed 3 years manufacturer warranty on the device from the date of purchase
