Energizer S8857 LED GLS 4.2W=40W bulb with B22 base in 2700K Warm White is equivalent to a 40W traditional bulb, delivering 470lms. Ideal where dimming is not required. It uses up to 90% less energy, which means a huge reduction on your energy bills. This LED has been made to last up to 15 years (15,000 hours) based on average use. This is 20-times longer than traditional light sources. Ideal to replace halogen or incandescent lamps, LED lamps are more efficient and longer lasting than any other lighting type.