40/75/125-watt replacement uses only 16/25/32 watts of power 600/1600/2150 lumens providing strong, vibrant light Estimated yearly energy costs $1.93/$3.01/$3.85 based on 3 hours per day $0.11 per kWh 3-way bulb for general purpose applications T3 spiral shape for use in table lamps and enclosed fixtures, Energy Star Qualified case of four (4)