Glycine Airman Bronze GMTvsSinn U18

The Glycine Airman Bronze GMT is praised by some owners for its 39mm size and 200m water resistance, with one owner finding it a well-built and finished modern take on the original. However, one owner criticized the main 12-hour hand on the 24-hour dial, stating it made the watch difficult to use and broke the original bezel function, leading to a return. Overall, owners are split on the utility of the Glycine Airman Bronze GMT's 12-hour hand on its 24-hour dial.

The Sinn U18 is praised for its unique deep blue/green dial with three-dimensional oxygen bubbles that change with light, and its comfortable, easily adjustable bracelet. Owners find the watch stunning and a piece of history, appreciating the refined hands. The Sinn U18 features a 44mm, 15.5mm thick case made from German submarine steel, offering a 2000-meter dive specification and Sinn's Ar-Dehumidifying technology, powered by a Sellita SW300-1 movement. The case thickness is apparent, and the watch comes as a complete set with box and papers for $3,000-$3,680. On balance, owners and reviewers rate the Sinn U18 highly for its striking dial and robust build.