In your bag silly.
You should always keep a light where the sun don’t shine…
So…you’re the Significant Other? Or were you one of the passers-by? 
finding the right spot without injury is important ..
Moon mode might help but so would a beacon
After you arrived at the springs did you place the light on moon mode and put it about 1 foot under water on a ledge to give the springs and eerie glow?
Nope, the water was too murky for that to work. However, I did swim around a bit with the light on a ~20lm level underwater, and I heard a few people remark about it. “Whoa, is that an underwater flashlight?!”
Really, it’s not remarkable. They sell waterproof flashlights at walmart. The interesting things about this light were traits that nobody seemed to notice, like the nice Nichia 219B tint.
shouldn’t we use waterproof gear in hot
spring due to nature of thermal expansion?
water might seep in and kill your light
It wasn’t as hot as my showers… and I haven’t had any issues with water leaking into lights there.
redundant, deleted
hmmmm, dunno but a friend of mine has her watch
died because of using it in the hot spring. (rated at
50 m or so). the glass might not expand as
much as the metal and water might come in.
maybe the spring there is not that hot?
I’ve never had any trouble with water leaking into a watch, either… even cheap ones, and even in really hot water. However, I’ve had water damage the watch band several times… and I assume the water would eventually dry out and crack the light’s o-rings in the same manner, but this would take repeated exposure over a period of months.
There is a “freezer” test described in other thread by one of the members to test if the flashlight is waterproof:
- Take out the battery and unscrew tailcap to let air in
- Put the flashlight in freezer for few minutes
- close the tailcap, take it out and put it in warm water 40…50C
The air inside will expand and if there is a leak you will see bubles going out of the flashlight. This way you can know for sure if your flashlight is waterproof in hot spring. And even if its not the expanding air won’t let water in unless you leave there for too long.
can we say that all airtight lights are waterproof but not all waterproof lights are air tight?
I like the drop it in a flooded farm row trick lol Then turn it on and see if it still works. I see they advertize these lights as weapons in a lot of sales. If you banged it around while it was hot- I wonder if the led would jump off the pcb xd I was just thinking about that cause that wouldn’t be a weapon- it would be like 60 dollars and you still get shot!
I don’t think I’d need a light if my pasty keister is exposed. My bum is so white that it glows in the dark.
It was a moonless night.
I thought you said it was clothing optional, did everyone go with the option of clothing?
The moon is only visible when it’s reflecting light from another source. Hence part of why I didn’t want to use a bright light. 
The moon mode on my torch helped me keep the night “moonless”.
I don’t think I wanna know… Okay, here goes: What use do you have for a flashlight in the shower? I know I’m gonna regret this. :~