857.012Ref

Built upon the 856 series, this functional instrument watch draws from Sinn's cockpit clock heritage and incorporates a rotating bezel for measuring time intervals. The bidirectional stainless steel bezel is secured by a specialized loss-prevention system and features a Tegiment-hardened base. For superior readability, it includes a luminous 0/60 minute marker on a black anodized aluminum ring, with the bezel providing firm, audible clicks at each minute.