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Craft · Jul 17, 2026 · 4 min read
Every Tidebreaker spends a night in our pressure tank before it leaves London.
A 300 m rating is a promise. We keep it by testing every Tidebreaker to 375 m of pressure, then checking it again with a condensation test the next morning.
Watches that fail are opened, resealed and tested again. Around one in two hundred needs a second night.
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