Structure & Tree Outdoor Lighting new 5 Watt 400 Lumen Chip on Board 36 degree optics 2700K IP68 Water-Resistant line of low voltage LED MR-16 bi-pins. Our 40 Watt equivalent 2700 kelvin LED Bi-Pin fits most fixtures that can take a standard size GU5.3 MR-16 Bi-pin Base. This LED light bulb is specifically designed for landscape lighting and outdoor low voltage lighting use. Will fit most competitive brands and ideally used in Spot Lights, Wash Lights, In-Ground Lights and some Underwater Fixtures. These lamps are IP68 watertight encapsulated to help keep moisture and dust away from the LED diodes; the aluminum heat syncs help draw heat away from the lamp to increase its lifespan. For use with only 12 Volt Low Voltage AC Transformers. Great for applications when you are looking for a warmer light. Rated for outdoor use in damp locations for use in sealed landscape lighting fixtures.