The service life is about 100 million times. Blue and white TTC are touch switches, actuation weight is approx. 42g Stable: It adopts double side wall structure, when the shaft core is pressed down, it fits tightly with the top cover, and the shaft core moves as stable as a rock. Quiet: double safety mute - the top cover, the base has a large impact contact area, and the elastic deformation is small. The mute effect is obvious and the press is smooth. Coated spring The switch uses a coated spring to ensure an optimal hand feel. › See more product details