Some time ago I got my hands on some 2XAA peak pamir. Dam things are built like tanks put out 200 lumens? Maybe and will suck them batteries dry. Like down to .650! Ran for like 40 some hours. So I had another 1X123 peak body and since the heads will run up to 3.7 I tried it out. Holy hell! You get like 400 lumens for around 30 minutes.on a primary she ran full out 200 lumens for 2 hours then kept putting out light for a total of 18 hours! Make a long story short Robyn hooked me up with a SS Logan body so I can get it off of this one. It’s way small plenty bright and can’t wait till I get that body.