Sinn 857

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Sinn 857
© Sinn

857 is an instrument watch by Sinn.

Magnetic field protected pilot's watch with second timezone, captive bezel, tegimented stainless steel case with dehumidifying technology and UTC time zone on a 24 hours basis.


Mechanical movement (ETA 2893-2), 28,800 A/h
Nivarox 1 hairspring, Glucydur balance wheel, Beryllium plateau
Mainspring Nivaflex 1, Incabloc shock absorber


Tegimented stainless steel case, bead-blasted
Ø 43.0 mm, height 12.2 mm
Pilot's bezel : stainless steel, hardened with Tegiment technology, captive, bidirectional rotating and latching in minute intervals; black anodized aluminum ring with luminous triangle
Nickel-free caseback
Sapphire crystal with anti-glare treatment on both sides
Screw-in crown with double o-ring gasket
Magnetic field protection up to 80.000 A/m
Waterproof to 200 m
Safe below atmospheric pressure


Hours, minutes, seconds, date
Dual time zone on 24 hours basis


Black, indexes and numerals with special white, long-lasting luminous paint
Internal 24 hours scalein white
UTC letters in daylight color, UTC hands with daylight color


Cowhide leather strap
Variants: Solid stainless steel bracelet, tegimented and black hard-coated


3 years