Sinn U18vsSinn U50 SDR with TEGIMENT option

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.

The Sinn U50 SDR with TEGIMENT option is widely praised for its robust submarine steel construction, impressive 50bar water resistance, and excellent anti-reflective coating. Owners and reviewers highlight its toolish, legible dial, satisfyingly tactile bezel, and the outstanding scratch resistance provided by the TEGIMENT hardening. Some owners note the lume is underwhelming, and a few find the clasp aesthetically large and chunky despite its functional diver's extension. Overall, owners and reviewers rate the Sinn U50 SDR with TEGIMENT option highly for its exceptional build quality and scratch resistance at its price point.