Hamilton Khaki Field Quartz 33mm Navy

This catalog item is a 33mm Hamilton Khaki Field Quartz model, a compact size compared with the common 38mm and 40mm field watch versions. Hamilton's official 33mm page identifies the collection as quartz and shows a navy blue dial. https://www.hamiltonwatch.com/en-us/h69301140-khaki-field-quartz.html

It uses quartz movement, so it is battery powered rather than hand wound or automatic. That makes the model relevant to someone who wants the field watch look without routinely winding the watch.

The catalog specification gives it water resistance up to 100 meters, which is a concrete rating rather than a promise that every water activity is suitable. Check the exact reference and Hamilton's instructions before using a particular watch for swimming.

The catalog item describes a navy nylon strap, but Hamilton also sells 33mm Khaki Field Quartz variants with a navy dial and metal bracelet. Confirm the reference number and included strap before buying, because the dial color does not identify the bracelet or NATO configuration by itself.