See my response below to Landon Thigpen. You're taking what he said out of context too.

You're taking what he said out of context. He's meaning a module that has 4 LEDs is equally as bright as a module that has 12 LEDs. Meaning the whole lighthead (that's equivalent to 3W or 4W whatever the case may be) is flashing. It's when you take that same 12 LED module and order it in dual color. So now half the light is red and half the light is blue, 6 and 6 LEDs. So if you still flash the whole light, which would look purple flashing both red and blue at the same time and no one SHOULD do, then you'll still be getting the same 3W or 4W output. But if you flash blue and red separate like you're supposed to, that's when you lose output because you're only flashing 6 out of 12 LEDs at a time. It's really pretty simple. His explanation was spot on.

Amazing.... listen to what he says. He is very clear about it.

Great to know I wouldn't used them to act like am a police officer but for emergency uses.my only theory is I live inLas Vegas NV state troopers are always on the road. But would you happened to know if these are legal here ? am unable to find it in Google