He seems to say not in a hot tub, but IIRC I've seen him say that showers are OK. Maybe it's because showers don't submerge the watch, even if the temp is similar? That is, the watch itself wouldn't heat up nearly as much in the shower as it would in a hot tub or bath.
Glue seal can easily loosen at 50 degrees C and a hot shower is 40-45C.. so it must have been very hot shower (or bad glue).
He seems to say not in a hot tub, but IIRC I've seen him say that showers are OK. Maybe it's because showers don't submerge the watch, even if the temp is similar? That is, the watch itself wouldn't heat up nearly as much in the shower as it would in a hot tub or bath.
How hot is a hot shower?
40-45C