Boldr CharizardvsSinn U18

Boldr is widely praised for its solid construction and appealing aesthetic, with owners noting it garners positive comments and is a favorite for its playful yet rugged design. The finishing, dial, and sapphire crystal with blue AR coating receive specific commendation, with one owner describing their Boldr Voyage as "shockingly accurate" at +0.12 seconds/day, and another noting their Boldr Venture loses only a few seconds per week. The Charizard model is highlighted as a cool collector's piece, appreciated for its subtle nod to Pokemon and featuring a sapphire case back with a printed Charizard, with an orange rubber strap making it pop. One owner noted a scratch engraved into the clasp of the Charizard model and another found the titanium case scratches easily, accepted as typical for a field watch. Conversely, one owner found the legibility of the Venture Field Medic II insufficient for nursing use and returned it.

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.