Product classification
HS code for Self-winding watches: 9102.21
Wrist-watches, whether or not incorporating a stop-watch facility, with automatic winding.
Classification of self-winding watches under HS 9102.21
Self-winding watches are classified under HS code 9102.21 because they are wrist-watches that utilize a mechanical movement equipped with an automatic winding mechanism. Unlike manual-wind watches that require the user to turn the crown, or quartz watches that rely on a battery, self-winding watches use an internal oscillating weight (rotor) that spins with the wearer's natural arm movement to tension the mainspring. This specific classification falls under Chapter 91, which covers clocks and watches and their parts. Heading 9102 specifically addresses wrist-watches, pocket-watches, and other watches with cases not made of precious metal or metal clad with precious metal. Subheading 9102.21 is reserved for those mechanical watches that incorporate an automatic winding facility, ensuring the movement remains powered through kinetic energy without external electrical sources or manual intervention.
- Covers
- Automatic mechanical wrist-watches
- Self-winding chronographs with non-precious metal cases
- Automatic dive watches with rotating bezels
- Self-winding dress watches with stainless steel or titanium cases
- Wrist-watches with stop-watch facilities and automatic winding
- Also under 9102.21
- Seiko SKX007 (automatic)
- Tissot Le Locle (automatic)
- Hamilton Khaki Field (automatic)
- Oris Aquis (automatic)
Codes often confused with 9102.21
Common mistake. A frequent error in classification involves confusing HS code 9102.21 with 9101.21. The primary distinction lies in the material of the watch case; 9101 is strictly for watches with cases of precious metal or metal clad with precious metal (such as solid gold or platinum), whereas 9102 covers base metal cases. Additionally, self-winding watches are often misclassified under 9102.11, which is the code for battery-powered quartz watches. It is essential to verify the movement type; if the watch requires a battery, it cannot be classified under 9102.21, even if it has a sweeping second hand that mimics a mechanical movement.
Top exporters and importers of HS 910221 (the code used for self-winding watches), 2025
In 2025, the largest exporter of HS 910221 (the code used for self-winding watches) in UN Comtrade data was Switzerland, with 74% of world exports; the largest importer in UN Comtrade data was the United States, with 16% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 910221, not only self-winding watches.
Top exporters 2025 · share of world exports
- 1 Switzerland $14.0B 74% of world exports
- 2 Hong Kong $1.2B 6.2% of world exports
- 3 France $965M 5.1% of world exports
World total: $18.9B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $3.3B 16% of world imports
- 2 Hong Kong $3.0B 15% of world imports
- 3 Japan $1.6B 8.1% of world imports
World total: $20.3B 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 self-winding watches
Brazil classifies self-winding watches under NCM 9102.21.00: HS 9102.21 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about self-winding watches
What is the HS code for Self-winding watches?
The HS code for Self-winding watches is 910221 (Wrist-watches; whether or not incorporating a stop-watch facility, with automatic winding). The HS code for self-winding wrist-watches with cases made of base metal (not precious metal) is 9102.21.
How do I classify Self-winding watches for customs?
Self-winding watches is classified under HS code 910221 — Wrist-watches; whether or not incorporating a stop-watch facility, with automatic winding. This is a 6-digit subheading level code.
Does this code include watches with gold-plated cases?
No, if the case is made of metal clad with precious metal (thick plating), it should be classified under heading 9101. However, standard thin electroplating on base metal usually remains under 9102.
Which countries are the top exporters of self-winding watches (HS 910221)?
In 2025, the top exporters of HS 910221 (the code used for self-winding watches) in UN Comtrade data were Switzerland ($14.0B, 74% of world exports), Hong Kong ($1.2B) and France ($965M). World exports came to about $18.9B, 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 self-winding watches (HS 910221)?
In 2025, the top importers of HS 910221 (the code used for self-winding watches) in UN Comtrade data were the United States ($3.3B, 16% of world imports), Hong Kong ($3.0B) and Japan ($1.6B). World imports came to about $20.3B, 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.
Is the HS code for Self-winding watches the same in all countries?
The base HS code 910221 for Self-winding watches is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for self-winding watches in Brazil?
In Brazil, self-winding watches (HS 910221) is classified under NCM 9102.21.00.