9105.29.20 - Having no jewels or only one jewel

This HTS category, 9105.29.20, specifically classifies "Other clocks" that are designed as wall clocks, do not contain jewels, or contain only one jewel. These clocks are further defined by their movement width or diameter not exceeding 50 mm and their capability to operate for more than 47 hours without rewinding. Examples within this classification might include simple, non-ornate wall clocks with basic mechanical movements that are designed for extended operation between winding periods.

The key differentiator for this category is the limited number of jewels (zero or one) within the clock's movement. This distinguishes it from its sibling category, 9105.29.30, which covers similar wall clocks but are explicitly stated to have "over one jewel." The presence or absence of jewels, and the quantity if present, is a critical factor in determining the correct classification for these types of long-running wall clocks.

As this classification represents a leaf node within the HTS, there are no further subcategories. Therefore, the classification of a product under 9105.29.20 depends entirely on meeting all the preceding criteria, including the specific limitations on movement size, operating duration without rewinding, and the precise count of jewels within its movement mechanism.