Meet M240 Silent: the reliable Bluetooth mouse that frees up your workspace. Pair in seconds with a fast: easy Bluetooth connection no dongle or port required. The ultra-quiet mouse features a 90% reduced click sound with that same click feel: eliminating noise and distractions for you and others around you. 1 A comfortable: contoured shape follows the natural curve of your hand so you can stay productive longer: and focus on what you do best. Built with the same quality standards that has made Logitech a leader in mice and keyboards.