The bulb simulates the natural photo-environment of a desert or tropical habitat while generating a heat source needed for a healthy reptile environment. Photons from the daylight spot bulb provides a focused beam of heat and light that pass through the glass heating the opposing surface, creating a direct basking spot for reptile. The bulb is made from glass containing rare earth neodymium phosphors produce a brighter, whiter light. This full-spectrum lamp emits energy across all visible wavelengths from 400nm to 700nm and UVA rays from 315nm to 400nm. Provides focused lighting and heat source ideal for reptile basking areas. Simulates the natural daytime photo-environment of the reptile’s habitat. For UVB output, use Zilla Desert 50 and Tropical 25 UVB Fluorescent bulbs.