The Kensington Pro Fit® Ergo Wireless Mouse (Model K75404WW) blends ergonomic comfort with smart dual-mode connectivity. Ergonomist-approved to promote a neutral wrist posture, it features built-in wrist support, a contoured shape, and 128‑bit AES-encrypted wireless via both 2.4 GHz nano receiver and Bluetooth 4.0 LE. With a customizable five-button layout—including forward/back and scroll wheel—and adjustable DPI settings (800 / 1200 / 1600), this mouse enhances productivity for both Windows, macOS, and Chrome OS users. A replaceable nano receiver ensures future compatibility, while a smart power switch maximizes battery life. Backed by a 3-year limited warranty