Isn't that a strobe built in on top of it? The LED's will not do any more than become focus lights. Even my 21 watt HID does not produce enough light.
FWIW Unless solo diving it is against protocol to have lights on your head, even for cave divers. You will blind your buddy in the dark. Plus with a 5 meter depth rating no one is going to use it for more than surface stuff, hence my comment of not using it for free diving. Most people I free dive with work in the 8 meter range and deeper. They do claim to have a 35 meter one coming out soon though, but even that is still within non deco limits, on 32% none the less.
Taken with a point and shoot that could be stowed in a pocket with my backup mask. I didn't even want to bring a camera into the cenotes but Susie insisted, so pocket cam it was. As you can see the tiny built in strobe over powered my HID.