Originally Posted by ItsJustMe

The manual that came with it did not indicate that brightness was settable, only flash speed. I thought this was odd too since I thought I'd seen that it was settable, but they never mention changing the brightness, only the speed, either on the packaging or in the manual. I'll go get it off my helmet and see.

Just played with it. As far as I can tell, brightness is only settable in steady mode. I turned it down all the way in steady mode, when I went to blinking mode it was back to full brightness, when I got back to steady mode it was extremely dim again. I turned it back to all the way bright on steady mode, the blinking modes seem unchanged.

If there's a way to change brightness in blinking modes, I can't find it. So I think that yes, I am in full brightness mode in that video.