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Sourcing & Build
InferredMovement data by Chronoscout
Sourcing Notes: Isotope uses a variety of suppliers for components, often opting for Swiss movements (Sellita) and high-quality case manufacturers. Dials and hands are custom-made to their unique specifications.
Cost Transparency
Ships from Henfield, United Kingdom
Current Rate
16%
6% HTS + 10% Section 301 (forced labor)
Est. Duty
$176–$624
on $1100–$3900 watch
UK is in the 10% flat Section 301 forced-labor tier (effective July 24, 2026) — the surcharge stacks on top of the MFN duty rather than being netted against it. Relevant for Farer, Christopher Ward, anOrdain, and other UK-assembled brands.
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 tariffsThis page was last updated: August 21, 2026 at 4 am