Guess don't need to remove the Ultra when using the hot tub ...

[jaymc]

Recommended conditions for using and storing Apple Watch Ultra​

Your Apple Watch Ultra works best in the following conditions:

• Ambient temperature while you're wearing Apple Watch Ultra: -4° to 130° F (-20° to 55° C)
• Ambient temperature while Apple Watch Ultra is charging: 32° to 95° F (0° to 35° C)
• Ambient temperature when Apple Watch Ultra is being stored: 4° to 113° F (-20° to 45° C)
• Water temperature during underwater activities with Apple Watch Ultra: 32° to 104° F (0° to 40° C)
• Relative humidity: 5% to 90%, noncondensing

Ambient temperature and other conditions can affect some features on Apple Watch Ultra and other Apple Watch models. For example, your battery might not last as long in cold temperatures. The ECG app is accurate only when used in ambient temperatures from 32° to 95° F (0° to 35° C). Heart rate measurements can be less accurate in low ambient temperatures. And in very low ambient temperatures, or in conditions where the temperature changes rapidly, the touch screen on your Apple Watch might not respond as expected.

 

[bruinsrme]

This is one of those situations where I would ask myself, is there any gain in wearing it during ( )<---- insert activity.

Me, hot tub or sauna would not be an activity where I would feel I would gain anything from wearing it. Off it goes.

Also, I would not use a hot tub without someone else nearby.

 

[xDKP]

This is one of those situations where I would ask myself, is there any gain in wearing it during ( )<---- insert activity.

Me, hot tub or sauna would not be an activity where I would feel I would gain anything from wearing it. Off it goes.

Also, I would not use a hot tub without someone else nearby.

Getting accurate temperature of the hot tub is a great idea 🙃

 

[bruinsrme]

Getting accurate temperature of the hot tub is a great idea 🙃

Too cold, too hot, aaaahhhh

 

[Jackbequickly]

Don’t see a purpose in wearing it in a bath or shower, but you can if you wish.

 

[CUAviator]

This is one of those situations where I would ask myself, is there any gain in wearing it during ( )<---- insert activity.

Me, hot tub or sauna would not be an activity where I would feel I would gain anything from wearing it. Off it goes.

Also, I would not use a hot tub without someone else nearby.

Recording calories burned…know what I mean?