High Quality MaterialThe 50W Tortoise Heat Lamp Bulb uses silver plating process to ensure anti-oxidation and anti-explosion. it uses vacuum glass tube to prolong lamp life. Full Spectrum UVA and UVB SunlightUVB bulb provides warmth for reptiles in the cold season. beside it contains 97 percent UVA which stimulate appetite, 3 percent UVB promote vitamin D3 synthesis, fully absorb calcium. Bring sunlight home to prevent disease and promote growth. Improved UVA OutputAn improved concave and convex reflector improves the UVA spectrum and provides more direct sunlight and higher UV radiation. Easy and Wide UseThe heat bulb uses standard E27 or E26 screw base for simple and easy installation. It is suitable for a wide variety of reptiles and amphibians, including turtles, lizards, bearded dragons, snakes, frogs, iguanas, turtles, chuckwallas, etc. High Quality Material 75W Reptile Lamp Use silver plating process to ensure anti-oxidation and explosion resistance. It uses Vacuu glass tube to extend lamp life. Upgraded UVA OutputAn improved concave and convex reflector improves the UVA spectrum and the privacy of more direct sunlight and superior UV radiation. specification Material: hydrogen gas filled quartz bulb E26 or E27 base socketWatttage: 75WVoltage: 220VSize: High: 1.9inch (4.8m) Diameter: 2inch (5cm) Color: silver. Easy to installThe heat bulb uses the standard E27 or E26 screw base for simple installation and easy to install.