ERGONOMIC VERTICAL MOUSE FOR LEFT-HANDED USERS -- Specially designed for left-handed individuals, promoting healthy neutral "handshake" wrist and arm positions for smoother movements and reduced overall strain. Recommended for users with Repetitive Strain Injury (RSI) and those who spend extended periods on their computers. EASY TO USE, PLUG & PLAY -- Strong and reliable 2.4GHz wireless connection with a nano USB receiver located on the underside of the mouse. Simply plug and play. Mouse dimensions: 5.0*3.0*2.5 inches. Weight: 95g. NOT compatible with Mac OS. Please confirm size and system before purchasing. MULTIFUNCTIONAL AND COMFORTABLE -- Easily access multiple functions with 6 buttons. Advanced "Page Back" and "Page Forward" buttons provide convenience for web browsing. 3-level DPI (800/1200/1600) suits both general needs and gaming requirements, featuring a premium optical engine for faster response, smoother tracking, and higher precision movements. ENERGY-SAVING MOUSE -- An independent On/Off switch on the bottom helps conserve energy effectively. It also automatically enters sleep mode after 8 minutes of inactivity. Press the right or left button to wake it up instantly. (2 AAA batteries required, not included). WIDE COMPATIBILITY -- Compatible with Windows 7, 8, 10, XP, 2000, CE, Vista, and Linux. Suitable for Notebooks, PCs, Laptops, Computers, and other devices. (USB receiver is located on the underside of the mouse).