General purpose. 1 1/2 Year bulb(One and one half plus year life based on rated life of 2500 hours (vs 1200 hours for standard incandescent 3-way bulb) at 4 hour consumer use per day)! Bright, crisp light. 1 1/2 Year long life. Lasts 2 times longer than incandescent bulbs (Lasts 2 times longer than standard GE incandescent 3 way bulbs). Light Output: 100/1600/2300 Lumens. Energy Used: 50/100/150 Watts. Life: 2500 Hours. Contains: 1 Bulb (A21). Made in China.