This self-ballasted, fluorescent spiral bulb uses a mini T2 spiral bulb that's designed to fit in most lamps. Using 13 watts, this spiral bulb produces a crisp light at 4,100 Kelvin. Nondimmable spiral bulb features a medium base and produces 880 lumens for 12,000 hours. 120-volt spiral bulb is perfect for lighting areas where harsh, white light is not desired. Energy Star qualified and RoHS compliant.