HS code · 6-digit subheading
HS Code 9108.20 – Watch movements; complete and assembled, with automatic winding
HS code 9108.20 is the 6-digit subheading for watch movements, complete and assembled, with automatic winding. It is used for automatic mechanical watch movements, self-winding movements, ETA automatic movements, miyota automatic movements and seiko automatic movements.
What HS 9108.20 covers
This HS code covers complete and assembled watch movements that feature automatic winding, meaning they are self-winding mechanical movements powered by the motion of the wearer's wrist. These movements are highly prized for their intricate craftsmanship, longevity, and the absence of a need for batteries or manual winding. They represent a significant segment of the luxury and traditional watch market. Importers are typically high-end watch brands, independent watchmakers, and luxury watch assemblers who value precision engineering and horological heritage. Exporters are renowned manufacturers with centuries of expertise in mechanical watchmaking. Key aspects in trade include power reserve duration, accuracy (often certified by COSC), the number of jewels, and the aesthetic finishing of the movement itself.
- Covers
- Automatic mechanical watch movements
- Self-winding movements
- ETA automatic movements
- Miyota automatic movements
- Seiko automatic movements
- Sellita automatic movements
- Swiss automatic movements
- Examples
- ETA 2824-2 Movement
- Miyota 9015 Movement
- Seiko NH35 Movement
- Sellita SW200-1 Movement
- Rolex Caliber 3235 Movement
Codes often confused with 9108.20
Common mistake. Distinct from electrically operated movements (910811, 910812, 910819) as it's purely mechanical; also different from 910890 which covers other non-automatic mechanical movements.
Top exporters and importers of HS code 910820, 2025
In 2025, the largest exporter of HS code 910820 in UN Comtrade data was Switzerland, with 31% of world exports; the largest importer in UN Comtrade data was China, with 18% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 Switzerland $103M 31% of world exports
- 2 Japan $69M 21% of world exports
- 3 Malaysia $58M 17% of world exports
World total: $335M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 China $39M 18% of world imports
- 2 Hong Kong $27M 12% of world imports
- 3 Switzerland $26M 12% of world imports
World total: $216M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 9108.20
Brazil does not split HS 9108.20: its NCM code is 9108.20.00.
All Brazil NCM codes in heading 91.08 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 9108.20
What is HS code 910820?
HS code 910820 is a 6-digit subheading in the Harmonized System that covers: Watch movements; complete and assembled, with automatic winding. This HS code covers complete and assembled watch movements that feature automatic winding, meaning they are self-winding mechanical movements powered by the motion of the wearer's wrist. These movements are highly prized for their intricate craftsmanship, longevity, and the absence of a need for batteries or manual winding. They represent a significant segment of the luxury and traditional watch market. Importers are typically high-end watch brands, independent watchmakers, and luxury watch assemblers who value precision engineering and horological heritage. Exporters are renowned manufacturers with centuries of expertise in mechanical watchmaking. Key aspects in trade include power reserve duration, accuracy (often certified by COSC), the number of jewels, and the aesthetic finishing of the movement itself.
What products fall under HS code 910820?
Automatic mechanical watch movements, self-winding movements, ETA automatic movements, Miyota automatic movements, Seiko automatic movements, Sellita automatic movements, Swiss automatic movements
What are common misclassifications for HS code 910820?
Distinct from electrically operated movements (910811, 910812, 910819) as it's purely mechanical; also different from 910890 which covers other non-automatic mechanical movements.
Which countries are the top exporters of goods under HS code 910820?
In 2025, the top exporters of HS code 910820 in UN Comtrade data were Switzerland ($103M, 31% of world exports), Japan ($69M) and Malaysia ($58M). World exports came to about $335M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 910820?
In 2025, the top importers of HS code 910820 in UN Comtrade data were China ($39M, 18% of world imports), Hong Kong ($27M) and Switzerland ($26M). World imports came to about $216M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 910820 structured?
HS code 910820 is a 6-digit subheading under the Harmonized System. The first 2 digits (91) identify the chapter, digits 3-4 (08) identify the heading, and digits 5-6 (20) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 910820?
In Brazil, HS code 910820 is NCM 9108.20.00. The last two digits are 00 because Brazil does not split this HS code further.