Review on Dazzling Landscape Lighting: Sterl Lighting Dimmable 4 64Inch, Perfect for Ambience Control by David Kits

Advantages: Supplied in packs of 10, each bulb individually wrapped; bright; Bargain price for 10 Cons: Lifespan is incredibly short. I first bought them for a newly installed 500W outdoor spotlight. The first bulb lasted about a week; the next lasted a day or two longer; the next lasted only two days. At first I thought it might be a problem with heat dissipation from the new mount, but it's not. I used one to replace a 500w indoor wall lamp that had a bulb that lasted over 10 years before eventually burning out; such a replacement took 3 days. Two different lamps, 4 bulbs - same sad story. The packaging says "2000 hours"; None of the 4 bulbs lasted more than 20 hours.