Kailh BOX switches are IP56 rated to keep dust and moisture out. Created with a box around the cross stem instead of the cross stem just sticking up, they’re built to avoid corrosion and debris buildup. The box extends to the contact plate and leaf, providing extra protection. Kailh BOX Crystal Jade Switches features a thicker clickbar which produces a more pronounced and deeper "click" as well as drastically improve the overall tactile feedback. The Kailh BOX Crystal Jade is almost the same as the Kailh BOX Jade, and the only difference is that the Crystal Jade has a clear and transparent bottom housing, perfect for RGB users and for those who love the Crystal-like transparent and clean look. It is also a 5 pins switch as compared to the BOX Jade that only has 3 pins.