‎Alkaline

Make sure this fits by entering your model number. ✔ This 100W black infrared heat lamp is made of solid ceramics element, it has a perfect heat radiation feature and no light emitted. Great for pet, lizard, coop, chicken, turtle, snake, chameleon, bearded dragon, aquarium, with one digital thermometer included. ★ PLEASE NOTE: The digital thermometer is placed in the built-in box of the ceramic lamp. Please open the ceramic lamp box when receiving the package. ✔ This ceramic heat lamp is simple and easy to install, just screw it into a standard porcelain E26 or E27 screw socket (ATTENTION: Use only with a porcelain socket, because the plastic socket may melt the lamp holder)