YauldSun Reptile Sun Lamp UVA&UVB This lamp is a self-ballasted lamp, a type of the HID(High Intensity Discharge) lamp. Its radiation spectrum contains medium wave ultraviolet UVB, long wave ultraviolet UVA, visible light and infrared ray. Its spectrum characteristic is similar to solar spectrum in alpine areas.The Basking Spot Lamps have a unique patented double reflector that focuses 35% more heat and light into a tight beam. Ideal for use with diurnal reptiles that thermo-regulate by basking, including many tropical and desert species.