“Clickiness” - The G900 is to the Mouse what Mechanical Switches are to the Keyboard
Subjectively, the G900 has one of the most resolute, definitive “clicks” we've experienced with a mouse. It is reminiscent of the first transitions to mechanical keyboards from membrane switches; there's a distinct, powerful click with a reliable actuation force and snappy return-to-ready. This is a result of the mechanical pivot button that Logitech deploys in its G900. Here is a mechanical documents to visually assist:
The yellow circle in the above image is the fulcrum of the keyplate. Pressing the keyplate actuates the mechanical switch, which is pre-loaded with a spring that reduces actuation friction for a predictably resolute “click” with each use. The spring tensioning of the switch effectively eliminates application of sheer force to the “click element,” so to speak, as the switch is mounted at the same angle as the keyplate will depress. Eliminating sheer force creates the reliability and consistency of click actuation that sets the G900 apart. Compared against itself, the G900 has a production button force range of approximately 10gf (~55gf to ~65gf). This means that, between our review mouse and retail samples that any number of readers might buy, the gram-force requirement for button click should be more-or-less identical. Our experience will be similar to yours, resultant of the strict tolerances at the factory level.
http://www.gamersnexus.net/hwreviews/2418-logitech-g900-chaos-spectrum-review-and-in-depth-analysis
