9105.21.40 - With opto-electronic display only

This HTS category, 9105.21.40, specifically covers electrically operated wall clocks that utilize an opto-electronic display as their sole means of indicating time. This implies that the clock's display relies on electronic components to generate illuminated characters or segments, such as LCD or LED displays, and does not incorporate traditional mechanical hands or dials. The primary function remains timekeeping, mounted or designed for wall installation, and powered by an electrical source.

This classification is distinct from its sibling category, 9105.21.80, which is designated for "Other" electrically operated wall clocks. The key differentiator lies in the display technology. While this category is limited to opto-electronic displays, the "Other" category would encompass electrically operated wall clocks with any display type *other* than opto-electronic, such as analog dials with illuminated markers or other non-electronic visual indicators.

As this is a leaf node within the HTS structure, there are no further subcategories to explore. Classification at this level is definitive, based on the presence of an electrical power source, wall-mounting design, and the specific opto-electronic nature of its time display. Examples within this category would include digital wall clocks with LED or LCD readouts, often found in modern homes, offices, or public spaces, where the visual presentation of time is achieved through electronic illumination.