Stable colour impression over lifetime. High lamp efficacy results in low operating costs and low heat generation. Provides better operating costs and improved light quality versus standard quartz metal halide (MHN/W-TD). Long lamp life compared with incandescent halogen and quartz metal halide (MHN/W-TD) lamps. Relatively low heat output enhances comfort for shoppers and staff. All types are UV-Block for reduced fading risks