Have this lamps selected from many others, because it has been promised that the lamps of a 50 watt incandescent lamp entsricht! Other vendors provide as only 35 watts! Shipping was very fast and the goods were packed securely. When unpacking but immediately noticed the imprint on the packaging of lamps on: 3.4 watts = 34 watts! Since I was a bit disappointed, since 50 Watt were promised! Hence 1 Star deducted! Have in 2 youth rooms with 3.15 m ceiling height and room size 16m² dismantled the old ceiling lights with transformer and new ceiling lights, 5 flames mounted. After inserting the bulbs is was pleasantly surprised. Very beautiful light and very bright! Recommend this product, but I can say nothing about the life! Will also fit my hallway with this bulb!