Logitech Wireless Mouse M325 Dark Silver. Micro-precise scrolling. Contoured design with rubber grips. Power-saving smart sleep mode. Logitech Unifying nano-receiver. Logitech Advanced 2.4 GHz wireless. Logitech Advanced Optical Tracking. With high quality tracking and micro-precise scrolling, the Logitech M325 mouse is essential for both home and office use. The Logitech Universal Wireless Receiver allows you to manage all of your wireless devices from a single USB port, saving you space. Whether you are left or right handed, you don't have to worry about comfort. The mouse features an ergonomic design that is comfortable and easy to use, allowing you to work at your computer without pain or discomfort.