The Latest New Model: XM-M390 100% Brand New in Box High Quality, Compact Design and Measurable Weight Fashion Cool Mamba Style. Ultra-precise Scroll Wheel Ergonomic shape, special feel good True 2000DPI Pro-Gmaing Sensor New Version: High Resolution: 2000DPI Adjustable resolution feature: 800/1200/2000DPI Profect combination, positioning accuracy Forward and backword side buttons Resoulition adjustable in driverless-free drive Switch Life: 8 million cycle The use of up to 60000 hours 16-bit ultra-wide data path 8400FPS frames per second (6.8 megapixels per second) Zero-acoustic UltraslickTM Teflon feet Special Edition for Gaming Ergonomic Both-handed design DPI Switch LED Light Comes with breathing Blue Led Light Buttons: 6 buttons with scroll wheel (Two Side-Buttons and One DPI Button) Most suitable for Laptop user and PC user Optical technology works on most surfaces Intelligent connectivity. no need to code, plug & play Built-weight iron, feel comfortable, mobile and stability The USB cable length is up to about 1.6m Compatible with Windows XP, Vista, Windows 7, ME,2000 and Mac OS...or latest Weight: about 110g±5g Size: 120 x 80 x 38mm Colors Available: Black Package Includes: 1 x Gaming Mouse 1 x Retail Box