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Sinn 104
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MovementAutomatic, SW 220-1
Diameter41 mm
Thickness11.9 mm
Water resistance20 bar (200 m)
CrystalAnti-reflective sapphire on both sides
Sinn

104

Sinn's modern pilot's watch, with a rotating bezel designed for flight calculations

Model History

Presented at the Basel fair in 2013, the 104 was born as a natural evolution of Sinn's pilot's watch tradition, keeping the instrument-style approach the brand has pursued since its debut with the 103 in the 1960s, but with a case that is lower in height and proportions designed for everyday use as well as technical use.

The distinctive feature of the 104 is the rotating pilot's bezel with a serrated edge for counting minutes, operable in both directions: a solution originally designed to allow quick calculations of remaining flight time, consistent with the "cockpit" language that has accompanied Sinn since the company's founding by Helmut Sinn in 1961.

Over time the line has expanded into numerous dial and finish variants — including executions with baton indices or Arabic numerals, sunburst dials in different colors and versions with a leather strap or steel bracelet — remaining one of the most accessible offerings in the brand's catalog of "classic" pilot's watches, alongside the more historic 103.

Technical Specifications

Movement
SW 220-1, automatic, 26 jewels, 28,800 A/h
Case
Polished steel, 41 mm, 11.9 mm thick
Crystal and caseback
Anti-reflective sapphire on both sides, transparent caseback
Bezel
Bidirectional pilot's bezel with serrated edge for minutes
Water resistance
20 bar (200 m), DIN 8310
Anti-magnetism
Protection according to DIN 8309
Dial
Various executions, including blue sunburst with luminous indices
Strap
Brown leather with steel buckle (in the most common versions)

Main Executions

104 St SaBase version, baton indices, date windowcurrent production
104 St Sa I BBlue sunburst dial, brown leather strapcurrent production
104 St Sa ADial with Arabic numerals at the cardinal pointscurrent production
Fun Fact

Unlike the older 103, which inherits its case from a Jaeger-LeCoultre model of the 1960s, the 104 was born as an entirely modern Sinn project, designed from the outset to combine the classic aesthetics of the pilot's watch with a thinner case that is more versatile in everyday use.