I don't know the cord length, the AC cord to the power supply is removable and you could buy longer ones if you look around.
I heard they are 3W LED with Cree internals and driven about 1.25w (30W/24 LEDs) some are loss in the driving electronics I am sure, If you have seen 1W LED moonlight you might know what to expect, except you get alot of them and with reflector optics.
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