This Is a Rapoo M50 Plus Silent Wireless Optical Mouse.

Silent click: The mouse switches are designed to be quiet, ideal for use in public places or late-night projects. Wireless connectivity: It uses a reliable 2.4 GHz wireless connection with a range of up to 10 meters. Adjustable DPI: The sensor has a 4-speed preset DPI that can be adjusted with one click. Ergonomic design: The mouse features an anti-slip finger support side skirt and is designed for large hands and a prone grip. Long battery life: It operates on one AA battery, which provides a battery life of up to 12 months.