9101.19.20 - With opto-electronic display only.

This HTS subcategory, 9101.19.20, specifically covers wrist watches that are electrically operated and feature an opto-electronic display as their sole means of indicating time. This implies watches with digital displays, such as LCD or LED screens, and excludes those with analog hands or purely mechanical displays. The classification hinges on the watch's operational mechanism being electric and its time display being exclusively opto-electronic.

Distinguishing this subcategory from its siblings, 9101.19.40 and 9101.19.80, is crucial for accurate classification. While all fall under "Other" electrically operated wrist watches, 9101.19.40 is further defined by the presence of jewels in its movement (or lack thereof), which is not a distinguishing factor for 9101.19.20. Similarly, 9101.19.80 is a broader residual category for other electrically operated wrist watches that do not fit the opto-electronic display criteria of 9101.19.20.

The subcategories within 9101.19.20 further refine the classification based on specific components. For instance, specific provisions exist for straps, bands, or bracelets that are entered alongside these watches and meet certain criteria outlined in additional U.S. notes. The existence of a "9101.19.20.80: Other" subcategory suggests a further breakdown for any remaining items within this opto-electronic display category that do not fall under the more specific provisions, potentially related to additional features or materials not covered elsewhere.