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 MR11 GU4 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 5-watt, MR11 GU4, based Mini Reflector bulb offers a light output of 300 CBCP, has a glass lens cover and has an average rated life of 2000 hours. Great for portable lamps, ceiling fixtures, track lighting, showcase displays and most common lighting needs.