Optimal Ergonomic Design: Our vertical computer mouse features a unique volute bionic design that reduces arm discomfort and hand stiffness, providing superior comfort for users with larger hands. Seamless Wireless Connectivity: The 2.4G RF wireless connection with USB Nano Receiver offers an efficient 10m/30ft distance that's plug-and-play convenience (Note: USB receiver is stored in battery compartment). Humanized Wrist Rest: The removable wrist rest lets your forearm and mouse work together in harmony, allowing your wrist to rest on a comfortable pad that protects it from friction while using the mouse. Adjustable DPI Settings: With 3 adjustable DPI settings (800-1000-1600), you can easily switch gears for your daily working needs using the dotted switch at the bottom, providing precise tracking on a variety of surfaces. Wide Compatibility and Warranty: This vertical mouse is compatible with various operating systems, including Windows XP, Vista, 7, 8, 10, 11,