The UVB 5.0 - 26W bulb is designed to provide your reptile with the necessary UVB radiation for optimal health and wellbeing. With a wavelength range of 290-320nm, this bulb is suitable for reptiles that require moderate levels of UVB exposure. The 26W power output ensures that your pet receives sufficient levels of UVB, while the compact design makes it easy to install in various enclosures. This bulb is a great investment for reptile owners who want to ensure that their pets thrive in a healthy environment.