2" depth - 1537 Par
12" depth - 423 Par
24" depth - 182 Par
is from their discriptions and seems in line with what the posted pars are from custom 1w builds are.
The only bad thing about it is that it only uses 1watt leds, which if you have a shallow tank, 18in or less then it is powerful enough to reach the bottom and have good light levels, but if you have a deeper tank you have to have stronger leds or the light just cant reach the bottom of your tank with enough par to do any real good.
A way around this is using optics on the leds but then you get much less area spread from the led and you have to add more leds or you get a spotty look from the light.
If you have a shallower tank I think that light would do very well.