Philips 872790084450400 is a spiral energy saving bulb with a normal cap and cool daylight. It is a convenient and safe home security solution with automatic sensor lighting. The bulb is super compact, has more light, and saves up to 85% energy. It has a starting time of 0.2 seconds, a power factor of 0.6, and a mercury content of 1.5 mg. The lifetime of the lamp is 8 years or 8000 hours, with a lumen maintenance factor of 0.7 at the end of its nominal lifetime. The bulb has a rated power of 15W, a wattage of 20W, and a lamp dimension of 61 mm in width and 120 mm in height.