Hamilton Khaki Field Pioneer AutomatiquevsSinn U18

Owners widely report the bracelet quality is a notable drawback for the price, and some find the dial basic and lacking legibility due to the absence of AR coating. However, the Hamilton Khaki Field Pioneer Automatique is praised for its accurate movement featuring an 80-hour power reserve, and its lug-to-lug dimension is noted as near-perfect for smaller wrists. The inclusion of a 24-hour scale is appreciated. Overall, owners find the Hamilton Khaki Field Pioneer Automatique to be just okay for its asking price new, with the movement's performance being a key positive aspect.

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.