17 watt, 4.75″ diameter floodlight bulb for 277 volt applications. Non-dimmable. Suitable for wet locations. Outdoor color rendering simulates bright daylight and is ideal for lighting signs, illuminating walkways and entry doors, and providing security at outdoor gathering points and waiting areas. Diamond Crystal™ Lens produces total beam uniformity for a soft, evenly distributed light that minimizes glare and reduces eye fatigue.