:bigsmile: Head strap adjustable for 26650 and 18650
where to look?
You mean something like this:
http://www.intl-outdoor.com/nitecore-headband-hb02-2nd-generation-p-305.html
The NiteCore HB02A is a little cheaper here:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270825520116