Robinhood,

I have a quick question about LEDs that's confused me. I'm guessing there's is not a direct corolation between wattage and lums output? The reason I ask is that I look at my Streamlight with a 3 watt bulb, but rated at 77lums, while the Surefire U2 is a 5 watt bulb rate at between 80-100lums. So, a 60% increase in wattage, but only a 30% in lums, if you happen to get a good LED with the full 100 lums?

I did notice that the life of the 3 watt Streamline LED is only 20,000 hours, which seems less than other LEDs. Does that mean Streamline "overclocks" that LED or something to achieve more output?

The other interesting thing how the different lights could use the same two CR123 batteries, but produce such widely variable lums/runtime rates. With some models producing lots of lums and lots of runtime and others the exact oppisite.

I guess there's a lot of variation, even with the same manufacture.