Universal compatibility with Windows 2000/XP/Vista/Linux/Win 7 operating systems. 2.4GHz wireless technology provides a reliable connection with a working distance of up to 10m. Enjoy responsive cursor control with 800-1200-1600DPI adjustable high-definition invisible tracking optical engine. Compact mini design for easy portability, perfect for home, office, or travel—simply slide into your pocket. Ergonomic design fits comfortably in your palm, reducing hand fatigue during long hours of use. Specifications: Material: Plastic; Size: 11*6.8*3.6cm; Color: Show as pictures; Wireless Technology: 2.4GHz; Wireless Distance: 10m; Adjustable DPI Switch: 800-1200-1600DPI; Button number: 6; Engine: Optical; Power Supply: 2 * AAA battery (Not Included). Notes: Color may vary slightly due to light and screen settings. Slight dimension difference allowed due to manual measurement. White acrylic decoration part is non-luminous, for decorative purposes only. Package includes: 1 * Wireless Mouse, 1 * USB Receiver.