Features and benefits: Amalgam Technology - provides cooler operating temperatures for consistent performance in any position. Long life 10000 hours to 12000 hours average rated life. No lead glass - Better lumen maintenance over life of bulb. 2700° K color temperature closet to incandescent light. Medium base. Replace less often, ideal for hard to reach places. End of Life logic guards against violent failures. Special Application Notes: Up to 23 watt is UL approved for totally enclosed fixtures. Use a 27w and 32w in an open recessed can. Do not use a 27w and 32w in an enclosed recessed can. Use voids the warranty. Do not use a 42w and 68w in an enclosed or open recessed can or any type of enclosed fixture. Use voids the warranty.