Description: Universal compatibility: work with Windows 2000/XP/Vista/Linux/Win 7/MAC operation system. 2.4GHz Wireless provides a powerful, reliable connection with an working distance of up to 10m. You can enjoy responsive and smooth cursor control with the 800-1200-1600DPI adjustable high-definition invisible tracking engine. Compact Mini Design - you can take it wherever you go, either for home,office or travel, just slide it into your pocket, super portable and practical. The ergonomic design will fit comfortably in your palm which will keep your hand from getting tired. You will remain comfortable even after long hours of clicking, tracking, and scrolling. Specifications: Material: plastic. Size: 11*6.8*3.6cm. Color: show as pictures. Wireless Technology:2.4GHz. Wireless Distance: 10m. Ajustable DPI Switch: 800-1200-1600DPI. Button number:6. Engine: Optical. Power Supply: 2 * AAA battery (Not Included). Package includes: 1 * Wireless Mouse. 1 * USB Receiver.