Features: This heat lamp is uv source for health in various situations, for example, for reptiles & amphibians used to the level of the sunshine and consequential uv light available in hotter climates It is often used in the area of animal/pet healthcare as well as breeding and egg incubation. These are the R63 bulb shaped with Edison screw cap for normal installation via an e27 socket. It provides a 24-hour heat source for a healthy animal environment.