9110.90 - Other:

This category, HTS 9110.90, "Other," encompasses a variety of watch and clock movements that do not fit into the more specific subheadings within Chapter 91. It primarily deals with components and partially assembled mechanisms that are not complete sets ready for final assembly. This includes, but is not limited to, rough movements in their unworked state, incomplete movements that have undergone some assembly but are not yet functional, and individual parts and sub-assemblies that do not constitute a "movement set."

While the sibling category, HTS 9110.11, focuses specifically on complete watch or clock movements, unassembled or partly assembled (movement sets), HTS 9110.90 is broader. It covers items that are further removed from a finished movement or are designed for purposes other than direct incorporation into a complete, functional watch or clock. The key distinction lies in the degree of completion and the intended use of the item; if an item is not a recognized movement set and not a rough movement falling under other specific provisions, it will likely be classified here.

Within this "Other" category, further subdivisions exist to provide more granular classification. The primary subcategories distinguish between complete movements that are unassembled or partly assembled, referred to as "movement sets," and a remaining "Other" classification. This allows for more precise accounting and duty assessment based on the specific stage of manufacturing or the exact nature of the components being imported.