BOX Crystal Switches. BOX switches are IP56 waterproof/dustproof. Only SMD compatible. Not compatible with other LEDs. PCB Mount BOX Crystal Royal Tactile 3.6mm travel 40g Actuation 70g Bottom Out PCB mount 5-pin Spec sheet coming soon. Please refer to their non Crystal counterparts spec sheets for sizing info. Crystal Jades are slightly heavier than their non-crystal counterparts.