Brightness Quality: 615/1540/2155 Lumens. Energy Info: $6.02/$12.05/$18.07 Based on 3 hrs/day, 11 cents/kWh. Cost depends on rates and use. 50/100/150 Watts. 120 Volts. Package Info: 1 Bulb Info: Is Three Way Bulb Life: 1.1 Years Based on 3 hrs/day. Bulb Appearance: 2800 Kelvins. Misc: 1 general purpose A21 bulb. Strong, vibrant light. 50/100/150W. 615/1540/2155 lumens. 1.1 year life (Based on 3 hours use per day.). Brightness: 615/1540/2155 lumens. Estimated Energy Cost: $6.02/$12.05/$18.07 per year. Visit us on the internet: www.GELighting.com. 800-GE-Light. To produce all three levels of light, this bulb should be tightened firmly, but not forcibly in the socket, to assure that all contacts are connected. Burning position - base down only. Use original Soft White from GE when you need a light without glare and harsh shadows. Specifically designed for 3-way lamps in your home or office, 3-way bulbs from GE offer a range of light levels. Choose the low light setting for energy savings, higher settings for general and activity lighting. Let GE Show You What Light Can Do: From light that lets you see every detail to light that helps you connect with family and friends, from vibrant to gentle - GE's new home lighting solutions make it easy to find the right light for your home. 1959-5000 Lumens: Strong, vibrant light. Made in Mexico.