Spectra Brite self-ballasted mercury vapor display lamps outperform and outlast comparable lamps 4 to 1, providing up to 10,000 user hours compared to 2,500 for standard lamps. Spectra Brite Display lamps improve the overall look of a lighting sheme by providing superior color temperature that closely matches any existing fluorescent lighting - preventing unsightly color mixing. Display your products in the best light! Ideal for diamonds, rubies, sapphires, emeralds, garnets, opals, gold, silver, platinum, and all other types of jewelry along with clothing, shoes, accessories, electronics, and more. Halogen display lighting is highly recommended for artists, for easier and more accurate color mixing. It is also a perfect full spectrum light bulb for indoor lighting applications that require color accuracy combined with high energy efficiency. A must for Art Galleries, Museums, Jewelry displays, Home or Office.