Osram 64542 P ECO is a perfect replacement for conventional incandescent bulbs. Its longevity is twice as much, while the light it produces retains the warmth and quality of incandescent light. The bulb is fully dimmable using conventional dimmers, and with its compact size, it can fit into even the smallest of light fixtures. Additional highlights include instant 100% brightness with no warm-up time, a superb color rendering index (Ra=100), and an average lifespan of 2,000 hours.