Why can't you dive even three meters with a watch that's "waterproof to 30 meters"?

Why can't can't you you dive dive even even three three meters meters with with a a watch watch that's that's "waterproof "waterproof to to 30 30 meters"?

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Why can't you dive even three meters with a watch that's "waterproof to 30 meters"?
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Why can't you dive even three meters with a watch that's waterproof to 30 meters? - Series Interesting facts about watches, My, Rukozhop, Plumbing, Aquarium, Clock, Wrist Watch, Mechanical watches, Longpost

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