857.020Ref

This 856-based instrument watch, modeled after cockpit navigation clocks, includes a pilot's bezel for tracking specific time segments. It is equipped with 80,000 A/m magnetic field protection, Ar-Dehumidifying technology, 20 bar pressure resistance, and a 24-hour second time zone. The bidirectional stainless steel bezel is Tegiment-hardened, features a loss-prevention mechanism, and utilizes a luminous triangle on an anodized aluminum ring for clear, audible minute-interval tracking.