Originally Posted by
clasher
I was looking at getting one and from what I understood it's got a dayflash mode that apparently is good for 16 hours but I guess you'd have to tape over the flashing light if there is a "no blinkies" rule or you're riding with other people. I don't like riding behind flashing lights, gives me a headache after a while.
I am not 100% sure. It has a solid mode but I think when a vehicle is approaching, it blinks with increasing intensity and frequency but don't quote me on that.
Where I could see it helpful on brevets is if someone is riding thru the night on a 600K but it is not a replacement for a normal rear light.