M220 SILENT ENJOY THE SOUND OF SILENCE Get all your work done without missing a beat or disturbing those around you. Silent Mice have the same click feel without the click noise – over 90% noise reduction. Durable, high performance feet quietly glide over the desktop. A smooth scroll wheel completes the silent experience. Silent Mice eliminate excess noise while protecting the health and productivity of everyone. Make this your last annoying click. Your family and friends will thank you.