Globe 48426 23-Watt Mini Compact Fluorescent Spiral Bulb (100-Watt Incandescent Equivalent), Cool White, 4 Pack 23-watt CFL is equivalent to a 100-watt regular incandescent bulb--uses less energy, and helps protect the environment Globe Ultra Mini cool white compact fluorescent light bulbs simulate daylight making them ideal for offices, reading areas, kitchens, and workshops Globe's Ultra Mini size fits most fixtures that require a standard medium base regular incandescent bulb The lifespan of one Globe Enersaver bulb is 8,000- to 10,000-hours and will outlast 8-10 regular incandescent bulbs Globe Enersaver bulbs are warranted to last 5-years