Standard E27: Reptile heat bulb made of high-quality insulating glass material, standard E27 screw interface, vacuum bulb is not easy to age, suitable for most household lamp sockets. 3.0 Full Spectrum UVA UVB: The UVA UVB radiation of tanning lamps promotes pet food digestion and absorption, produces vitamin D3, promotes calcium absorption, prevents nails from softening and deforming, and stimulates reproduction. 50W 110V Halogen Crawler Light: Turtle bulb power is 75W, input voltage is AC 110V, size is 2 x 2in, easy to install, just screw the bulb into the screw holder of E27. Special for Reptiles, Amphibians: Reptile lights can be used for turtles, lizards, frogs, snakes and various amphibians in containers. Use only the special stand for reptile heat lamps. Please Note: Pet bulbs cannot be irradiated for a long time, which will shorten the life of the bulbs, it is recommended to use 3-4 hours a day. For the health of your pet, buy good quality reptile bulbs.