From an electronics point of view there is nothing extraordinarily unique about the Saint. Spanning from 2.5 volts to 12 volts or so in an LED light is pretty straightforward these days with combo boost/buck regulators. The innovation appears to be in the design of the battery compartment which is pretty slick.
i was just referring to the "DUEL-FUEL" aspect of it.other than thats its nothing special although i'm sure its decent.
i've got a few handheld SUREFIRES but my PETZLE works just fine for a headlamp.plus i dont like the ones with battery packs on the back of your head.this thing looks too bulky for my liking.and as far as the price is concerned i'm surprised it isnt more with SUREFIRE's prices.
i just didnt know if this multi battery capability had been done before.i could see it being very useful for troops or anyone in a remote area.2 choices are always better than one.
i expect we'll be seeing more and more lights with this option in the future.it only makes sense.