Sinn 206 ARKTIS IIvsSinn EZM 12

The Sinn 206 ARKTIS II is widely praised as a capable tool watch, particularly for its legibility and advanced features. Owners and reviewers highlight its robust build, including screw-down chronograph pushers accessible underwater thanks to Sinn's D3 system, and Ar-Dehumidifying Technology to prevent fogging. The watch is powered by a top-grade ETA Valjoux 7750 automatic chronograph movement, offering a two-day power reserve and anti-magnetic properties. Its "arctic ice" blue dial is noted for its striking appearance and legibility. However, the 43mm case size and thickness are mentioned by some as potentially too large for smaller wrists, and the chronograph pushers require a firm press. On balance, owners and reviewers highly regard the Sinn 206 ARKTIS II for its impressive dive watch capabilities and distinctive blue dial.

The Sinn EZM 12 is widely praised as a purpose-built tool watch for air rescue and medical professionals, with reviewers highlighting its innovative design for critical timing, including a one-hour countdown bezel, an internal 10-minute bezel, and a pulsometer for pulse-taking. Its Tegiment hardened case, Ar dehumidifying capsule, and easily removable components for decontamination and strap changes are consistently noted as practical strengths. Owners and reviewers also point to its value at around €2,527/$3,340 and robust magnetic resistance. However, some owners find the dial layout busy and the lume on the hands disappointing, while the winding and inner bezel crowns are reported as difficult to operate, and the 38-hour power reserve is considered less robust than expected for its serious purpose. Overall, owners and reviewers rate the Sinn EZM 12 highly for its unique, practical design and robust construction tailored for demanding professional use.