Brightness Quantity: 2150 lumens; 1600 lumens; 620 lumens. Energy Info: $0.72; $1.57; $2.23 bases on 3 hrs/day, 11 cent/kWh. Cost depends on rates and use. 18.5 watts; 13 watts; 6 watts. Bulb Info: Both. LED. Is Three Way. Has Energy Star Logo. Screw. Bulb Life: 13.7 years based on 3 hrs/day. Bulb Appearance: 2700 k.