These Pandeia Compass Sundial Watches may be of interest.
“To use your Pandeia compass sundial watch, hold it level. Then place the dial wing in an upright vertical position. Observe the directionals engraved under the glass on the compass face. Locate the North and South directionals. Align the compass arrow over the N if located in the Northern hemisphere and over the S if in the Southern hemisphere. The dial wing will now cast a shadow on the roman numerals, telling you the time. Allow for slight variation in time depending on the time of year and your location on Earth.” [via]