Premium MaterialThe 75W tortoise shell heating bulb adopts silver plating process to ensure anti-oxidation and explosion-proof protection. It uses evacuated glass tubes to extend the life of the bulb. Full Spectrum UVA + UVB SunlightUVB bulbs provide warmth for reptiles in cold seasons. In addition, it also contains 97% UVA to stimulate appetite, 3% UVB to promote vitamin D3 synthesis and fully absorb calcium. Bring sunlight into the home to prevent disease and promote growth. ENHANCED UVA OUTPUT: The upgraded bump reflector increases the UVA spectrum and provides more direct sunlight and higher UV radiation. Easy to Use The heating bulb uses a standard E27/E26 screw base, easy and convenient to install. It works with a wide variety of reptiles and amphibians, including turtles, lizards, bearded dragons, snakes, frogs, iguanas, tortoises, chakwala, etc.