Features: The relative strength is moderate, the intensity is very uniform, the small crisp feeling, the short and medium stroke, the rebound is compact, very rapid, the rebound lag is very small, and the conservative life is 30 million times! TTC dustproof gold micro switch (30 millions click lifetime) Gold micro switch is the name (mainly refers to gold alloy contactor) Relative strength is moderate, strength is very uniform, small and crisp feeling, short and medium distance, compact rebound, very fast, rebound lag is very small, conservative life of 30 million times. TTC gold micro switch has been tested by UL and ENEC International Laboratory. It has passed not only 30 million mechanical life but also 30 million electrical life.Real 60 million times of service life, stability and reliability,Since July 2019, many mice have been selected. 100% Satisfaction Guarantee, please contact me if you have any questions.Thank You!