Quieter Click: Enjoy the same click feel with a 90 percent quieter sound than traditional computer mice. This click has been given the Quiet Mark tick by the UK Noise Abatement Society Crafted for Comfort: With contoured grips made of soft rubber, the M330 Silent Plus Logitech mouse is built to give ultimate comfort for right handed users Long Life: This wireless mouse has a 24 month battery life, and automatically switches to sleep mode when not in use. That means you can focus on your work without the hassle of frequently changing batteries of your PC mouse. (*Battery life may vary based on use and computing conditions) Advanced Optical Tracking: With a connection of up to 10m, this computer mouse provides high performance precision and smart cursor control on any surface. No driver installation required