This is the LED helmet light which goes with the LTC3780 LED driver.
3 Seoul P4-U 3.5W LEDs mounted on aluminum stripe fastened to helmet.
Acrctic Silver thermal glue.
Vertically adjustable.
Looks a bit like Robocop.
I like it.
It is very light and adds no noticeable weight to the helmet.
More importantly, it's fucking bright.
I will add a tiny bit of silicone to protect it from water.