M+ wireless cross-screen transmission technology, Ergonomic design for medium size hand, Connect via Bluetooth 5.0, 2.4GHz and wired, Intelligently switch among up to 5 devices , 7 setting levels 50-4000 DPI adjustable sensor, switch with one click, PAW3220 optical sensor: precision on nearly every surface, Eco-friendly 800mAh rechargeable battery, Onboard memory, 10 customized buttons