This reptile heat lamp bulb simulates natural sunlight, providing pets with plenty of heat and UVA. It can heat the ambient temperature inside the terrarium, thereby solving the problem that reptiles cannot regulate their body temperature by themselves. And promote the reptile's physiological behavior and activity level. It can create a warm and comfortable natural living environment for your beloved pets. UVA plays a vital role in reptile pet growth activities. UVA rays help promote reptile's appetite, digestion and metabolism ability and enhance reptile's courtship, foraging behavior and vitality. Our heat lamp bulbs generate gentle and soothing heat. Simulating natural sunlight helps reptiles regulate their body temperature and feel like they're in nature.