“I have only used the torch for a few dives as yet and it is a powerful light. The only thing I can comment on as yet is that it takes longer to switch on and off than my pervious lights. I haven't made up my mind if that is a good or bad thing. I haven't been able to find SOS yet and probably user ineptitude.”
HI Karen, the switch mechanism is like that deliberately. Press and hold for 2 seconds. It avoids that situation where it gets knocked on in your BCD pocket or gear bag and the battery is flat when you get to the dive site. To get to SOS mode double tap the switch quickly