9105.21 - Electrically operated:

This HTS category, 9105.21, specifically addresses electrically operated wall clocks. It encompasses a broad range of wall-mounted timekeeping devices that are powered by an electrical source, whether that be battery or mains electricity. The primary function of these items is to display time on a wall, and their operation relies on electronic mechanisms rather than traditional mechanical movements.

Within the broader classification of "Other clocks," and then more specifically "Wall clocks," this category distinguishes itself from its sibling, 9105.29, "Other," which would cover non-electrically operated wall clocks. Therefore, if a wall clock uses batteries or is plugged into a power source to function, it falls under 9105.21, whereas a purely mechanical wind-up wall clock would not.

To further refine classification, this category is divided into two subcategories: 9105.21.40, for wall clocks featuring only an opto-electronic display (such as LED or LCD), and 9105.21.80, for all other electrically operated wall clocks. This subdivision allows for a more precise identification based on the type of display technology employed.