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Sourcing & Build
Needs ConfirmationSourcing Notes: Hong Kong–based brand best known globally for premium FKM vulcanised rubber straps engineered for popular dive watches (Seiko, Tudor, Rolex, Hamilton). Watch division launched in 2017 with the Undive Dark Sea 500. Current production: Mechanic Ocean Mark II powered by the Miyota 9015. Earlier Hyperion Ocean (45mm Sellita SW200) and Hyperion Ocean Chronograph (Seiko NE86 / 8R48) lines are now discontinued.
Cost Transparency
Ships from Hong Kong
Current Rate
16%
6% HTS + 10% Section 122
Est. Duty
$38–$224
on $239–$1399 watch
⚠ Current Section 122 rate expires Jul 24, 2026 — rates may change.
Customers liable for all customs, taxes and tariffs. US customers pay duty-free for some products.
Major component manufacturing hub. Many microbrands source cases and components from HK.
Tariffs are assessed based on where the watch is assembled, not where individual components originate. A watch with a Japanese movement assembled in the US incurs no import duty.
Learn more about watch tariffsDiscover More
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This page was last updated: July 5, 2026 at 7 am