ECOSUB 10.0 UVA & UVB desert reptile light bulb is ETL approved. The 26W bulb base in the E26 design and the UVB reptile light save electricity-perfect condenser with brilliant brightness, save a lot of power,10% UVB, and 33% UVA output. It improved circuit design that can be used for up to 8000 hours. Our UVB reptile bulb provides necessary UVB rays for optimal calcium metabolism and is ideal for tortoises, turtles, geckos, snakes (pythons, boas, etc.), iguanas, lizards, chameleons, frogs, toads, etc.