Tonor 2.4GHz Wireless Optical 1000DPI/1600DPI Mouse Mice for PC Laptop Computer- 12 months Warranty The ambidextrous design enables comfortable use with either hand. Comfortable palm/claw grip. Page forward and page backward function makes navigation simple and efficient. 3 DPI resolutions: 800/1200/1600.Works with Windows 2000, Me, XP, Vista, Win 7 win 8.1 and Mac. Simple Plug and play connection. Smart power-saving mode - the mouse goes into sleep mode after 15 minutes of inactivity. Warranty: Tonor offers Free Premium Warranty for our mouse devices: y: (1) One-Year warranty, (2) Two- Month hassle-free return, (3) Seller pays for return if item is DOA or not as described.