Provide the caterpillar with the necessary UVB rays, the light is close to sunlight. Aids in digestion and absorption of food, as well as metabolism, and is essential for bone growth and prevention of metabolic disorders. High UVB radiation is similar to a natural desert environment with more direct sunlight and stronger light. It is very effective in the synthesis of vitamin D, especially for reptiles.Perfect for reptiles, amphibians, fish, mammals, carnivores. You can adjust the temperature and time by turning the knob. The light head can be rotated 360 degrees and the direction can be freely changed to control the position of the light (Note: the distance between the bulb and the animal must be at least 30 cm).This turtle heat lamp can also be used in other E27 bulbs such as headlights, lamp incandescent, filament, lamp ceramic, halogen and LED lamps.