Product classification

HS code for Clock glass: 7015.90

Glasses, clock or watch and similar, glasses for non-corrective spectacles, curved, bent, hollowed etc, (not optically worked), hollow glass spheres and segments, for the manufacture of such glasses.

Classification of clock glass under HS 7015.90

Clock glass is classified under HS code 7015.90. This classification is part of Chapter 70, which covers glass and glassware, and specifically heading 7015, which deals with glasses for clocks, watches, and spectacles. The code 7015.90 is applied to glass that is curved, bent, hollowed, or similarly shaped, but not optically worked. "Not optically worked" means the glass has not been ground or polished to create specific refractive properties, which distinguishes it from optical lenses. Clock glasses are typically used as protective covers for the dial and hands. They can be made of mineral glass or synthetic materials like acrylic, but when made of glass, they must follow the criteria of being shaped for horological use. If the glass is flat and merely cut to a circular shape without further bending or curving, it may fall under different headings, but 7015.90 is the standard for shaped clock crystals.

Covers
  • Curved glass for wall clocks
  • Domed watch crystals
  • Bent glass for mantle clocks
  • Hollowed glass segments for horology
  • Non-corrective curved glass for protective covers
Also under 7015.90
  • Seiko watch crystals
  • Rolex watch glasses
  • Ray-Ban sunglass blanks (non-prescription)
  • Oakley safety glass preforms
  • Swatch watch faces

Codes often confused with 7015.90

Common mistake. A common misclassification is HS code 7005, which covers flat float glass. If the glass has not been curved or bent, it may be viewed as simple sheet glass. Another error is using 9001.90 for optical elements; however, clock glass is generally not considered an optical element because it does not have a corrective function. Additionally, plastic clock covers should be classified under 3926.90 rather than Chapter 70, as Chapter 70 is strictly for glass.

70.05Glass; float glass and surface ground or polished glass, in sheets, whether or not having an absorbent, reflecting or non-reflecting layer, but not otherwise worked9001.90Optical elements; lenses n.e.c. in heading no. 9001, prisms, mirrors and other optical elements, unmounted, of any material (excluding elements of glass not optically worked)3926.90Plastics; other articles n.e.c. in chapter 39

Top exporters and importers of HS 701590 (the code used for clock glass), 2025

In 2025, the largest exporter of HS 701590 (the code used for clock glass) in UN Comtrade data was Hong Kong, with 41% of world exports; the largest importer in UN Comtrade data was China, with 17% 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 701590, not only clock glass.

Top exporters 2025 · share of world exports

  1. 1 Hong Kong $54M
  2. 2 Switzerland $20M
  3. 3 United Kingdom $18M

World total: $130M Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 China $19M
  2. 2 Hong Kong $18M
  3. 3 Thailand $17M

World total: $112M 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 codes for clock glass

Brazil splits HS 7015.90 into 4 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about clock glass

What is the HS code for Clock glass?

The HS code for Clock glass is 701590 (Glasses; clock or watch and similar, glasses for non-corrective spectacles, curved, bent, hollowed etc, (not optically worked), hollow glass spheres and segments, for the manufacture of such glasses). The HS code for curved or bent clock glass that is not optically worked is 7015.90.

How do I classify Clock glass for customs?

Clock glass is classified under HS code 701590 — Glasses; clock or watch and similar, glasses for non-corrective spectacles, curved, bent, hollowed etc, (not optically worked), hollow glass spheres and segments, for the manufacture of such glasses. This is a 6-digit subheading level code.

What does "not optically worked" mean in this context?

It means the glass has been shaped into a curve or dome but has not been precision-ground to function as a magnifying or corrective lens.

Which countries are the top exporters of clock glass (HS 701590)?

In 2025, the top exporters of HS 701590 (the code used for clock glass) in UN Comtrade data were Hong Kong ($54M, 41% of world exports), Switzerland ($20M) and the United Kingdom ($18M). World exports came to about $130M, 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 clock glass (HS 701590)?

In 2025, the top importers of HS 701590 (the code used for clock glass) in UN Comtrade data were China ($19M, 17% of world imports), Hong Kong ($18M) and Thailand ($17M). World imports came to about $112M, 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 Clock glass the same in all countries?

The base HS code 701590 for Clock glass 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 clock glass in Brazil?

Brazil splits HS 701590 into 4 NCM codes, so the right one for clock glass depends on the product's details: 7015.90.10 (Clock and watch glasses), 7015.90.20 (Glasses for protective masks, goggles, shields), 7015.90.30 (Glasses for other non-corrective spectacles), 7015.90.90 (Other similar glasses; hollow glass spheres).