Efficient yield: The annual operational cost of the 27W 4000LM LED lamp is only € 2.86. You can save up to 89% of its annual electricity costs compared to comparable bulbs Outstanding durability: three key design elements, premium LED chips, hollow body and our patented ceramic heat dissipation technology (CHDT ) They ensure a shelf life of more than 25,000 hours. Comfortable experience: immediate brightness of 4000 lumens, without waiting time to high total brightness. Color processing (CRI> 80) for vibrant and natural colors. With the high beam angle of 270 °, a particularly largely large area lighting is obtained, without flashing or buzzing.