The heading covers all watches except wristwatches — including pocket watches, pendant watches, and similar forms. The key classification boundary is that wristwatches (designed to be worn on the wrist) fall under heading 9102 subheadings for wristwatches, while any other watch form with a base metal case and battery power falls here. Physical form and intended wearing method are the primary distinguishing factors.

Watches with opto-electronic (LED/LCD) displays only are grouped under specific lines (e.g., 9102912010 for movement and case, 9102912020 for battery), separate from those with mechanical or mixed displays. This distinction affects which 10-digit line applies and can affect duty rates, so importers should confirm display type before filing entry.