CIGA Design BLUE PLANETvsSinn U18

The CIGA Design BLUE PLANET is widely praised for its unique visual impact and aesthetic, particularly its 3D rotating globe dial with raised topography. Owners and reviewers consistently highlight the high aesthetics and unique time-telling mechanism. However, legibility is a recurring concern, with multiple sources noting difficulty distinguishing familiar continents and small, unclear markers. The 46mm case, while lugless and surprisingly wearable for some due to its short lug-to-lug distance, is described as top-heavy and having substantial heft, especially in stainless steel. The automatic movement offers a 40-hour power reserve and an accuracy range of +30/-15 seconds per day. On balance, owners and reviewers appreciate the CIGA Design BLUE PLANET for its striking, unique dial design and aesthetic appeal, despite significant legibility challenges.

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.