If you have Apple Watch Ultra and want to check that its depth gauge and seals are working properly, you can get a Depth and Water Seal Test from Apple.
You might want to send your Apple Watch Ultra for a Depth and Water Seal Test if:
- You’d like to check the functionality of the depth gauge in your Apple Watch Ultra.
- You might have caused unseen damage to your Apple Watch Ultra — for example, by crashing while bicycling, or hitting your watch on a rock during a hike.
Having broken an Apple Watch in a bike crash and another one cliff jumping at a lake, I have to say that being personally attacked by a support article is new to me.