BA15S single contact bayonet base, 19 super bright LEDs, LED light bulbs, LED replacement bulbs, 60,000 hours Life Epan Time, Warm White 3000K~3500K, 40 lumens, 1.2W LED home spotlight bulbs, equal to the output a 10W halogen lamp. 12 volt led light bulbs, Just plug it into your 12V AC or DC halogen fixture and start to save on utility bill. This LED bulb have a spotlight with 15 degree viewing angle using 19 LEDs with 15~20 degree viewing angle. 12VDC, 12VAC or using solar panel power. 90% more efficient than incandescent bulbs and Halogen bulbs traditional lighting, Lifespan of up to 60,000 hours means that equates to 20 years lifetime if turn on lamp 8 hours a day.