Thinking about buying one? DON'T. I got mine from the mystery box awhile back and it never worked. Day 1 I had issues with it not turning on, or the button turning on the flashlight 2 minutes after pressing it. Smacking it seems to be just as reliable for turning it on as pressing the button lol. Based off the comments this is a regular issue with this crap. Don't waste another minute thinking about buying this junk.
CheeseCurdThe button is an electronic button, so if the battery is super dead, or if it has just been opened and is getting it's first battery it does take a few minutes for the switch to work, it "charges"... This would explain the "coming on 2 minutes later" issue you have... Not sure if you had the same issue multiple times? Maybe the battery died or you removed it for storage in between uses... I've been carrying mine for a couple years now and I've never had an issue with the switch, maybe I just got lucky?