Philips EnduraLED A21 Dimmable LED Lamps provide smooth dimming with less energy. The long life properties eliminate the hassle of repeated relamping in busy areas. Instant-on light; emits virtually no UV/IR light in the beam; 25,000 hour rated average life; available in 2700K color temperature; contains no mercury; mimics light profile of a standard incandescent A21 lamp.