Sunlite Halogen bulbs produce more lumens per-watt (LPW) and have a longer lamp life than standard incandescent lamps. You can lower operation costs by more than 30% by using fewer halogen lamps to produce a greater amount of light. These MR16 GU5.3 Based Mini Reflector bulbs can last up to 1.8 years with normal household use of 3 hours a day and display a brighter, whiter light than incandescent bulbs. This Sunlite 50-watt, MR16 GU5.3, based Mini Reflector bulb offers a light output of N/A CBCP, a Blue glass finish and has an average rated life of 2000 hours. Great for portable lamps, ceiling fixtures, track lighting, showcase displays and most common lighting needs.Features: - 50-Watt - 2,000 Hour Average Lamp Life - GU5.3 base, EXT - Blue glass - 50MR16/NSP/12V/B General Characteristics BulbMR16 Lamp TypeColored MR16 Mini Reflector ANSI CODEEXT Lamp Life Hours2,000 Hours Bulb FinishBlue Base2-Pin (GU5.3) Life (based on 3hr/day) 1.8 Years Estimated Energy Cost$6.02 per Year DimmableTrue Electrical Characteristics Watts50 Volts12 Light Characteristics Color Accuracy (CRI)100 Light AppearanceBlue Beam Angle12° Narrow Spot Product Dimensions MOL (in)1.77 Diameter