Features: brand new and high quality Mechanical lifespan about 5,000,000 clicks for lifetime Applications: used on many industries, telecommunications, consumer electronics, me dical, testing/instrumentation, computers/servers/peripherals and au dio/visuals Normal strength, crisp hand-free, uniform springback and no hysteresis. High precision mechanism design offers perfect operation and long service life. When the pressure is applied, the switch is turned on. When the pressure is released, the switch is closed, and the internal structure is forced to open and close by the metal spring. Specifications: Size: approx 6x6x4.3MM Package Size: approx 5x5cm/1.97x1.97in Operating force: 8015gf Free Position: 4.300.15mm CR=(OF-CF)/OFx100%, 2510% Per Travel: 0.200.10mm Mechanical lifespan: 5,000,000 Clicks Quantity: 2PCS Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment. Package includes: 2 PCS x Micro Switches