Review on Westinghouse Lighting 0454800, 3-Way Incand A21 Light Bulb - 50/100/150w, 130v Soft White - Long-lasting 2000 Hour Lifespan by Megan White

That's great, but you need to pay attention: Note that the description line says 130V. This lamp was designed and measured at that level, but your home is actually 120V. That means it will last longer on 120V, but will also emit fewer lumens. I was so surprised at HOW MUCH information is on the boxes, it's really awesome and here's the breakdown. At a voltage of 130 V, the lamp power was 50/100/150 W and 500/1350/1850 lumens. But at 120V, which you probably have at home, these are 44/88/132W and 375/1010/1385. This is a "commercial" lightbulb. So if you run a motel, for example, you don't have to constantly change the lightbulbs. For example, at 130 V, the service life is 1.8 years with 3 hours of operation per day. But at 120V, the lifespan increases to 5.1 years at 3 hours per day! Now I didn't catch 130V when I ordered them. So I thought this was great for the flashlight I have, which I still use a lot at lower settings anyway. Now I know I have a 5 year old lightbulb in there! On the other hand, it wasn't bright enough for the living room lamp, which I ALWAYS turned on at 150 watts. (Because now it's actually 132 watts). So consider your consumption and buy accordingly! :)