The mini spiral compact fluorescent (self ballasted) lamps are 120 volts, has a color temperature of 2700 degrees and a CRI of 80, The light bulb consumes 23 watts of power which is equivalent to a 100 watt incandescent light bulb, The bulb is 4, 33 inches long and has a diameter of 2, 44 inches, The light bulb has a Medium (ED26) base, produces 1600 lumens of light and has average life of 10,000 hours, SKU: HWRDL194