The Aomryom 100W 2 Pack Ceramic Heat Emitter Infrared Reptile Heat Lamp Bulb is a great way to keep your pets warm during cold days. These bulbs are made of high-quality ceramics that are crack-resistant and waterproof. They also do not emit any visually detectable light which may disturb the sleep cycle of your pets. With a wattage of -100 watts and a bulb base of E26, these bulbs are perfect for use in standard E26 lamp bases.