The exceptional performance of the Ultraline MR16 reflector lamps are a result of USHIO's advancements in their filament design and gas fill technologies. Manufactured under ISO 9001 guidelines, refinements in the reflector coating process slows deterioration of the reflector, allowing Ultraline lamps to maintain their consistent Halogen color throughout the life of the lamp. Beware of Xenon filled imitations that produce a pale incandescent color. Rated at more than twice the life of other MR16s on the market today, Ultraline lamps are an astute choice for applications where frequency of lamp changes and cost of ownership are significant factors. The Halogen capsule helps to protect ultraviolet sensitive objects by eliminating harmful UV emissions.