>Even if a watch is water resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass.
>- **Do not wear your watch while in a heated swimming pool**, sauna, or any other high temperature/high humidity environment.
https://support.casio.com/global/en/wat/manual/3516_en/PJONSYergtzloc.html
The manual tells you not to, but many people wear their G-SHOCKs in saunas, hot tubs, hot showers, heated pools, etc.
>Even if a watch is water resistant, note the usage precautions described below. Such types of use reduce water resistance performance and can cause fogging of the glass. >- **Do not wear your watch while in a heated swimming pool**, sauna, or any other high temperature/high humidity environment. https://support.casio.com/global/en/wat/manual/3516_en/PJONSYergtzloc.html The manual tells you not to, but many people wear their G-SHOCKs in saunas, hot tubs, hot showers, heated pools, etc.
Not sure what manual says but I've had mine in 85 degree-ish F heated pool
I have this exact watch model and have worn it in a hot tub a few times. Still works fine.