Brilliantly designed. That is what you will think when you use this innovative new Touch Dome. Of course the light is completely sealed and has no o-rings, baffles, or switches to wear out. But more impressively, unlike old-technology capacitive or e-field switches the Touch Dome is reliable even when wet or with gloves. Proprietary Optical Field Sense technology provides on, off, color change and even dimming. Beautifully designed, elegantly functional.