Product classification
HS code for Quartz clock movements: 9109.10
Clock movements, complete and assembled, electrically operated.
Classification of quartz clock movements under HS 9109.10
Quartz clock movements are classified under HS code 9109.10. This classification is part of Chapter 91, dedicated to horological instruments. Heading 9109 covers clock movements that are complete and assembled. This distinguishes them from watch movements (heading 9108) and from individual parts or unassembled sets (heading 9110). The subheading 9109.10 specifically targets movements that are electrically operated, which includes the vast majority of modern quartz movements used in wall clocks, desk clocks, and various industrial timing devices. The classification relies on the movement being a finished, functional unit ready for installation into a clock case. It must meet the technical definition of a "clock movement" rather than a "watch movement," which is generally determined by the dimensions of the movement. Specifically, if the movement is thicker than 12 mm or wider than 50 mm, it is classified as a clock movement. These units typically consist of a quartz crystal oscillator, an integrated circuit, and either a stepper motor for analog hands or a display driver for digital outputs.
- Covers
- Complete assembled quartz clock movements
- Battery-powered quartz clock motors
- Synchronous motor quartz movements
- Digital clock modules (complete and assembled)
- Radio-controlled quartz clock movements
- Also under 9109.10
- Seiko Quartz Clock Movements
- Rhythm Quartz Clock Movements
- Hermle Quartz Clock Movements
- Youngtown Quartz Clock Movements
- UTS Quartz Clock Movements
Codes often confused with 9109.10
Common mistake. The most common misclassification is 9108.11, which is for quartz watch movements. The distinction depends on the size of the movement. Another error is using 9114.90 for clock parts; however, 9114 is for individual components, whereas 9109.10 is for complete, assembled movements. If the movement is unassembled or partly assembled, it should be classified under 9110.11.
Top exporters and importers of HS 910910 (the code used for quartz clock movements), 2025
In 2025, the largest exporter of HS 910910 (the code used for quartz clock movements) in UN Comtrade data was China, with 65% of world exports; the largest importer in UN Comtrade data was Hong Kong, with 10% 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 910910, not only quartz clock movements.
Top exporters 2025 · share of world exports
- 1 China $18M 65% of world exports
- 2 Hong Kong $1.9M 6.8% of world exports
- 3 Germany $1.4M 5.1% of world exports
World total: $28M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Hong Kong $2.2M 10% of world imports
- 2 Germany $1.5M 7.0% of world imports
- 3 Japan $1.1M 5.3% of world imports
World total: $21M 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 quartz clock movements
Brazil classifies quartz clock movements under NCM 9109.10.00: HS 9109.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about quartz clock movements
What is the HS code for Quartz clock movements?
The HS code for Quartz clock movements is 910910 (Clock movements; complete and assembled, electrically operated). The HS code for complete and assembled electrically operated quartz clock movements is 9109.10.
How do I classify Quartz clock movements for customs?
Quartz clock movements is classified under HS code 910910 — Clock movements; complete and assembled, electrically operated. This is a 6-digit subheading level code.
What defines a movement as a clock movement instead of a watch movement?
A movement is classified as a clock movement if it exceeds 12 mm in thickness or 50 mm in width/diameter; otherwise, it is usually a watch movement under heading 9108.
Which countries are the top exporters of quartz clock movements (HS 910910)?
In 2025, the top exporters of HS 910910 (the code used for quartz clock movements) in UN Comtrade data were China ($18M, 65% of world exports), Hong Kong ($1.9M) and Germany ($1.4M). World exports came to about $28M, 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 quartz clock movements (HS 910910)?
In 2025, the top importers of HS 910910 (the code used for quartz clock movements) in UN Comtrade data were Hong Kong ($2.2M, 10% of world imports), Germany ($1.5M) and Japan ($1.1M). World imports came to about $21M, 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 Quartz clock movements the same in all countries?
The base HS code 910910 for Quartz clock movements 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 quartz clock movements in Brazil?
In Brazil, quartz clock movements (HS 910910) is classified under NCM 9109.10.00.