Compared to other lighting technologies, such as probe start metal halide or competitors' pulse start systems, Venture's Uni-Form systems provide more system lumens per watt, meaning more light for less energy. They also provide improved color uniformity for minimal color variation from lamp to lamp, faster warm-up and restrike and longer rated life. Venture Lighting's Uni-Form Open-Rated light bulbs also block nearly all damaging ultraviolet light with UV Shield Technology.Metal Halide light bulbs are a member of the High Intensity Discharge (HID) family of lighting products. Metal Halide light bulbs are among the most energy efficient sources of white light available today. These 70 watt metal halide bulbs feature special chemical compounds known as Halides that produce light in most regions of the spectrum.Venture Lighting MP 70W/U/UVS/PS (40389) Metal Halide light bulbs offer high efficacy, excellent color rendition, long service life and good lumen maintenance. Because of their numerous advantages, metal halide HID bulbs are used extensively in outdoor applications and in commercial interiors.