Description: This black ceramic heat emitter bulb is the perfect 24 hour heat source for all reptiles.These porcelain heating devices screw into a standard porcelain incandescent socket, giving off intense muscle-penetrating infrared heat while emitting no light.It will also increase the ambient air temperature in the terrarium. Infrared heat penetrates the scales and skin tissue, promoting health and healing as it widens the blood vessels and increases blood circulation. Features: Wide application: This black ceramic heat emitter bulb is the perfect 24 hour heat source for all reptiles. Operational Principle: Heating source: Ceramic, infrared, electrical, no light emitted. Solid ceramics element has a good heat radiation feature(also works in sealed box). Advantage: It will also increase the ambient air temperature in the terrarium. Infrared heat penetrates the scales and skin tissue, promoting health and healing as it widens the blood vessels and increases blood circulation. Long life: High thermal efficiency, and life expectancy up to 20,000 hours. Materail: The bulb is made from high temperature clay + environmental protection glaze, which simulates the moon's natural for nocturnal viewing without disturbing the reptile's day/night cycle. Specification: Condition: 100% Brand New Color: Black Material: Ceramic + Alloy Size: (L) x (W) 7.5 x 10.5cm / 2.95" x 4.13" (Approx) Wattage: 50W/ 75W/ 100W / 150W(Optional) Voltage: 220V Heating source: Ceramic, infrared, electrical, no light emitted Package Included: 1 x Heat Emitter Bulb Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.