ERGONOMIC HANDSHAKE DESIGN: The Pro Fit Ergo Vertical Wireless Mouse features a natural handshake position, improving wrist posture for enhanced comfort and reducing soft tissue compression. CONTOURED SLOPE FOR SUPPORT: The 46.7-degree contoured slope keeps your wrist in a neutral position, while the extended lip for the little finger provides complete support for smoother, larger muscle group movement. FULLY-FEATURED MOUSE: Equipped with a scroll wheel, left, right, forward, back, and DPI (800/1000/1200/1600) buttons, this mouse offers comprehensive functionality for all your computing needs. PLUG & PLAY WIRELESS CONNECTIVITY: Simply plug in the nano receiver for wireless connectivity up to 20 meters. Compatible with macOS 10.14 or above, Windows 7 or above (A USB C to USB 3.0 adapter will be needed for newer Mac products). LONG-LASTING BATTERY LIFE: A low battery indicator ensures you're never caught off guard. One AA battery lasts up to a year, providing reliable performance. (Battery life may vary based on actual user behavior.)