Hey there! As an Apple Watch Ultra user, you’re entitled to a free water and depth seal check at an Apple Store or by sending it to an Apple repair center if it’s not cracked in any way.
I’m curious, how long did you have the first-generation Apple Watch Ultra? And what kind of activities did you enjoy with it? Did you go fishing, boating, backpacking, sailing, or take it for a dip in a pool or lake?
Also, do you use Water Lock, Depth, or dive gear? Lastly, is your Apple Watch covered by AppleCare?
If it’s still in perfect condition, I recommend checking it out and seeing if you can take it to Apple for a free checkup. You can find more information on how to do this at this link:
https://support.apple.com/en-us/118571