2.4GHz Wireless: Connects via a USB receiver, offering a transmission range of up to 10 meters. Plug and play, no driver needed, widely compatible with laptops, PCs, and desktops. 1600 DPI: With 800 and 1600 DPI options, it meets your work and life needs. Features auto-sleep for energy saving. Compatible with Windows 95, 98, NT, ME, 2000, XP, Vista, 7, and 8. Ergonomic Design: The wireless mouse is ergonomically designed to perfectly fit your fingers, reducing muscle strain by 30% with its contoured shape. 6 Buttons: Includes side buttons and forward/backward buttons for convenient web browsing. Tested for over 5,000,000 keystrokes for long-lasting durability. Battery Powered: Powered by batteries with smart energy-saving technology, offering up to six months of battery life (depending on usage). Item Type: Wireless Optical Mouse Material: ABS Operating Frequency: 2.4GHz Wireless Distance: Approx. 10 meters / 10.9yd Resolution: 800, 1600 DPI Buttons: 6 keys Battery: AAAx2 (battery not included) Applicable for: Windows 95, 98, NT, ME, 2000, XP, Vista, 7, 8