Installed I have 4 pieces of these lamps in the nursery. Super light. In the corridor I have a lamp with E14 version of this, but here have 3 months ago and LED reflectors, but 5 watts installed 400 lumens / 2700 Kelvin from a hardware store. The 6 watt lamp to keep 10000h and keep the hardware store lamp but 20,000 hours. Pricewise both lamps sums equal to. In each lamp (hall and children) 4 LED lamps are now built. So 24 watts in the nursery and 20 watts in the hallway. The children's works now really bright when as with the old 40-watt bulbs. Here always burned 160 watts and now only 24 watts, at the same focal length. Saving? This bill can each create. It is important to have good light, no matter where. Let's see when the first lamp fails.