857.010Ref

Derived from the 856 line, this instrument watch is inspired by cockpit navigation clocks and includes a rotating pilot's bezel for tracking time intervals. It offers 80,000 A/m of magnetic field protection, Ar-Dehumidifying technology, and 20 bar water resistance, alongside a 24-hour second time zone. The bidirectional, captive stainless steel bezel features a Tegiment-hardened base and a luminous 0/60 minute marker on an anodized aluminum ring for precise, audible adjustments.