Specification: red border M185 Size: 69 * 99 * 39mm Weight: 76g Operating distance: 10m Features: 1. Reliable wireless connection: Enjoy the freedom of movement offered by the reliable wireless connection between mouse and PC or Apple computer. 2. Ultra-concealed Nano Receiver: Since this mini receiver stays connected to your computer, the quality and reliability is equivalent to the wired mouse of the M185 wireless mouse Comfortable and Convenient Design: The Logitech M185 wireless mouse adopts an arcuate shape, more comfortable than a touchpad, and is suitable for right-handed or left-handed people.