I had an opportunity to use my Salvo Rat Jr. in a backup light exit from a cave this week. I was HUGELY impressed with the amount of light this tiny thing threw. It absolutely blew away either of my husband's backup lights (a Halcyon Scout and an OMS LED). It was so bright and so strong, the cave instructor himself was asking me about it when we got out of the water. And at about $100, it's not by any means the most expensive backup light out there. Two o-rings, too. Nice little light -- congratulations to Salvo yet again!