2.4GHz wireless mouse with triple level adjustable DPI optical sensor 2.4GHz wireless technology provides a reliable connection up to 33ft (10 meters) with no cable clutter 3-buttons with scroll wheel great for web browsing and every day tasks Multi level DPI (800/1200/1600) adjustable optical sensor supports smooth and precise movements Ergonomically designed to fit your hand, improves comfort and reduces repetitive injury USB-C wireless dongle storage compartment allows convenient and safe storage while on-the-go Multi-level power saving modes and ON/OFF switch maximizes battery life Silent click buttons offer a quiet environment for you and those around in library or meeting room Compatible with Windows 7/8/10, Mac OS X 10.13 or later, and works with most desktops, notebooks and laptops with a USB Type-C port