Sinn U18vsWolbrook Skindiver II Automatic

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.

Owners widely praise the Wolbrook Skindiver II Automatic for its retro aesthetic, comfortable 40mm wearability, and legible dial with faux patina, with the brushed finish, drilled lugs, and included Beads of Rice bracelet and tropic strap being highlighted. The watch features a Citizen/Miyota 8315 movement, adjusted in France to ±15 seconds per day, offering a 60-hour power reserve and 200m water resistance with a box sapphire crystal. Some owners note the 20mm strap size as potentially problematic, and Wolbrook's policy of not honoring the warranty on resold watches is a significant criticism. On balance, owners and reviewers rate the Wolbrook Skindiver II Automatic highly for its compelling retro design and solid build at its price point.