The Hi-Tech Lamps part number EXZ/CG/ULT-U is a 50 watt (50W), 12 volt (12V) MR16 Ultraline?? Titan Series reflector halogen lamp made by Ushio. This is the longest life MR16 reflector halogen lamps on the market, with a typical life time of up to 18,000 hours. The Ushio Ultraline Titan MR-16 lamp has been recognized by IESNA (Illuminating Engineering Society of North America) as a unique and significant advancement to the art and science of lighting.It minimizes maintenance required to support premium and difficult access lighting installations: Museums and Galleries, Retail Shops, Offices and Commercial Areas, Hotels and Restaurants, Track Lighting and Accent Lighting.This lamp has maximum overall length of 45mm (1.78in) and it has a cover glass. The average lifetime is 18000 hours. This lamp has a color temperature of 3100 Kelvin (3100K), and has an output of approximately 2700 candelas (2700cd). This lamp is also known as Ushio EXZ/FG/ULTRA TITAN and 1003555.