Summary: Quietest mouse I have yet to use. The left and right click are 90% reduced in click noise! The wheel is quite silent as well, nice grip feel to it, bit rougher action than I am used to, meaning effort level to scroll, indented movement, not a free wheel scroll. The mouse itself is a bit smaller as well, in between a travel mouse and one that might ship with Dell. After a month of use, the button click does feel and sound a bit rougher than when I first got it.
Summary: I bought this as a second mouse to use when I am talking to my fiance on the phone, so that she won't know that I am not paying attention to her. It has worked wonderfully. It isn't 100% silent, but it is quiet enough so that someone on the phone cannot hear you. I read on other reviews that you need to have the usb dongle close to the mouse, so I put a USB hub (with the dongle in it) about 2 feet away from the mouse.
Summary: This mouse removes the clicking noise and replaced it with a nicer and much quieter little "bump" noise. For almost 5 years now I have been responded with a clicking noise and it is so weird not having it. This mouse is definitively a must have and has the smallest USB wireless adapter I have ever come across. Would have given it a 5 star, but the title does say "silent" and it isn't, it's almost, but not fully silent. PS. Minecraft is a really clicky game!
Summary: Bought this mouse to work at a nighttime. Its really silent comparing to other mouses. But after falling down from computer desk its battery door cracked and doesn't hold itself. So batteries stay inside only on spring power.
Summary: I am Mr Techi, I love gadgets & buy the best of everything. This mouse is used by me in medical school. I am the only one using a mouse and my classroom is silent during lecture. You can not hear the clicks. If you hold it on your chest you can hear a contact click of 5% - 10%. It is as silent as needed. My table mate cannot hear the clicks. It is silent in this setting. It does feel cheap & or fragile. However, it is very comfortable.
Summary: I wanted a quiet mouse because the loud clicks were coming through during skype conversations and teleconferences. I also have two computers hooked up to the a monitor/keyboard/speaker switch. Many wireless devices (even bluetooth) do not support that kind of switching because you have to pair the device with the dongle receiver. Not so with this mouse! It works perfectly with both computers and does not require "repairing"! Love it.