The chapter notes define watch movements as those with a small case diameter (typically under 50 mm) and designed to be worn or carried, while clock movements are larger or intended for fixed installation. The physical dimensions and intended use, not the product's commercial name, govern which heading applies.
A battery-powered quartz movement is electrically operated and falls under 910910. The 910990 residual subheading is reserved for movements that are neither battery-powered nor AC-powered, such as traditional spring-wound or weight-driven mechanical movements.
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Heading 10 of 14 in chapter 91 · 2 products
Heading 9109 · $262K of $371.3M
ImportsExports
Imports
$262KYoY · free account
Exports
$24KYoY · free account
Low of 8 reported months · imports
Low · free accountFewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 8 of 12 months reported, exports 8 of 12 months reported. Source: U.S. Census Bureau.
Imports · August 2026
origin
Germany and Switzerland together supply 85% of it. Thailand pays 19.0% duty; Canada 0.0%.
customs district
destination
entry
rate provision · imports
5.1% enters free of duty.