This convenient standard medium base
incandescent soft white 3-way light bulb has one low 20 watt setting
that's great as a security light in a lamp on a timer. Provides ample
illumination at a wattage that uses little electricity, with a long
average life of 1,200 hour or 1.1 years. The 135 and 150 watt settings
provide beautiful and bright light for general household tasks.