Professional, ultra-long life energy saving bulb uses 80% less electricity and last 15 times longer than ordinary light bulbs. Approximately the same light output as a normal 65 watt bulb. Built in control gear makes them suitable to replace GLS lamps in most existing fittings. 15 watt BC-B22 warmwhite 2700k. Alternative code – 100ET2U15B22. Energy Rating A. Standard 2 pin BC cap.