Looking for a single 18650 cordless headlamp with an XHP50
For headlamps getting rid of the heat is a main problem.
There are XHP35 ones from Zebralight.
I believe Armytek Wizard Pro is your only choice.
Well, I can advice a custom version of HC30. International shipping I think is not a problem, so good luck.
http://forum.fonarevka.ru/showthread.php?t=31892