This 100W Black infrared heat lamp is made of solid ceramics element, it has a perfect heat radiation feature and no light emitted 24hr Heat Source 100% Efficiency, This ceramic heat lamp is simple and easy to install, just screw it into a standard porcelain E27 screw socket, great for pet, coop, chicken, turtle This heat lamp's input voltage is AC 90-120V, power is 100-Watts, full size is diameter 3.15 inch x height 4.13 inch This ceramic heat emitter bulb is the perfect 24 hour heat source for reptiles and amphibians. It could last 9000-15,000 hours, even longer This bulbs surface temperature is very high when working, please do not use your hand to test the temperature, also please adjust the distance between the heat lamp and the pets.