Advanced Tactile Typing Feel The Kailh Crystal Robin Box Switch is an advanced tactile box switch that features a crisp, sharp bump and a noticeable tactile feedback to deliver a unique typing experience. If you are a tactile fan, the Crystal Robin Box Switch is a must try. Gold Plated Spring This switch adopts a gold-plated spring to enhance its oxidation resistance and anti-vulcanization performance. Double Dustproof & Waterproof Structure  This switch's dust wall design and box structure keep dust and water out and can guarantee the switch’s operational lifespan to last up to 80 million times. Excellent Backlight Effect This switch is equipped with a transparent housing to increase light permeability and provides superior light performance for any typist or gamer. 5-Pin Scheme The 5-Pin structure lessens the switch wobbliness when triggered and delivers a stable typing experience.  Product Structure Product Information Specification