Sinn 155 S Revolution IIvsSinn 156.1

The Sinn 155 S Revolution II is widely praised for its TEGIMENT-hardened, black PVD-coated stainless steel case and sapphire crystal, contributing to its durable tool watch identity. Reviewers note its legible bicompax dial with aged-look Super-LumiNova and a ghost-effect bezel, powered by a Sellita SW510 automatic chronograph movement. Owners report a slight misalignment in the 30-minute counter hand, which Sinn considers within tolerance. The watch's 43mm diameter and 51mm lug-to-lug measurement are considered large by some. Price points vary across sources, with one stating $3600 and another $2500 for this limited edition. On balance, owners and reviewers appreciate the Sinn 155 S Revolution II's robust build and vintage-inspired design, despite its substantial size and a minor hand alignment concern.

Owners widely praise the Sinn 156.1 for its central minutes chronograph, useful for tracking elapsed time, its purpose-built tool watch design, and appealing proportions. Some owners find the 43mm case and 50.8mm lug-to-lug dimensions large, with one noting the bracelet can make it feel oversized on smaller wrists, though it wears better on a strap. One owner found the Sinn 156.1 pricey. On balance, owners rate the Sinn 156.1 highly for its functional central minutes chronograph and tool watch aesthetic.