Mechanical and automatic wrist watches housed in stainless steel, titanium, or other non-precious-metal cases occupy the mid-market and enthusiast segment, where movement craftsmanship rather than case material drives value. The dual classification criteria — non-battery power source and non-precious case — must both be confirmed; a mainspring-driven watch in a gold-plated case that does not meet the cladding threshold would fall here rather than in the precious-metal heading. Importers sourcing from Switzerland benefit from well-established movement documentation practices, while sourcing from other origins may require more detailed technical declarations.

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