Sinn 104 ST - References, Prices and Owners' Reviews

Sinn 104 St is a model launched in 2013 in Sinn’s “Flieger” tradition: a polished 41 mm steel case, a bidirectional captive pilot’s bezel with minute ratcheting (luminous triangle at 12), day/date display, double-AR sapphire crystals front and back, a screw-down crown and 20-bar/200 m water-resistance, powered by the Sellita SW220-1 day/date automatic (formerly ETA 2836-2 in early runs); the 104 family spans baton-index (“I”) and Arabic-numeral (“A”) dials in black, white, blue, anthracite and green, without deploying Sinn’s higher-tier Tegiment/Ar tech.

Design & legibility: the model’s identity

The 104 delivers the classic cockpit look: matte, high-contrast dial, crisp minute track, baton hands/markers with ample lume, plus a clear day/date at 3 that follows the white-on-black scheme, so you get instant “tool” readability while keeping a clean, office-friendly aesthetic.

Case, strap and everyday comfort

The polished case (41 mm × ~11.9 mm, 20 mm lugs, head mass ~73 g) wears short thanks to sharply downturned lugs (~46.5–47.5 mm L2L); the captive bezel resists being knocked off, and the bracelets (fine-link steel, leather, rubber) let you jump from work to weekend, meaning the watch sits flat under a cuff yet keeps plenty of character.

Movement: architecture, performance and care

Inside is Sellita’s SW220-1 (4 Hz, hacking, automatic, ~38–41 h), chosen for availability and drop-in compatibility with the earlier ETA 2836-2; Sinn fits a sapphire display back and states DIN 8310 water-resistance (20 bar) plus low-pressure resistance for flight use, which means yearly pressure checks and a 4–6-year service cadence will keep trouble at bay.

Timeline & main models (2013–2025)

(2013) Sinn 104 St Sa “Launch”:

The first iteration: polished steel, 41 mm, captive pilot’s bezel with minute ratcheting and luminous triangle, day/date and 200 m—an aviation-leaning “instrument” that quickly became a bestseller for its clarity and versatility. Early pieces used ETA, with Sellita following as supply shifted. Common ID: Sinn 104 St Sa 104.010.

(2015) Sinn 104 St Sa I “Indices”:

Baton-index dial (matte black) in the same case with the same day/date + captive bezel formula, double-AR sapphire and a display back. With 200 m and “cockpit” readability, this became a go-anywhere daily that slides neatly under cuffs. Current-catalog anchor: Sinn 104 St Sa I 104.010.

(2015) Sinn 104 St Sa A “Arabic”:

Black dial with Arabic numerals, identical spec (41 mm, 20 bar, sapphire, display back), bidirectional pilot bezel with luminous triangle. Framed as the more overtly “Flieger” visual take while retaining daily versatility, sold on leather, rubber or steel.

(2017) Sinn 104 St Sa I W “White”:

A bright dial that emphasises the minute track and black hands, changing the vibe without touching fundamentals (DIN 8310 20 bar, low pressure, captive bezel, SW220-1). The White version has become a line staple. 

(2018) Sinn 104 St Sa I B “Blue”:

Dark-blue dial with restrained finishing, keeping baton markers and the 41/11.9 mm ergonomics; a tasteful shot of colour without losing the “instrument” look. Specs unchanged (sapphire, 200 m, day/date).

(2019) Sinn 104 St Sa I A “Anthracite”:

Anthracite baton-index variant in the sober/chic lane with unchanged tech; the neutral tone reinforces the “one-watch-does-most” appeal and sits alongside black, white and blue as a core option. Normalised ID: Sinn 104 St Sa I A non communiqué. :contentReference[oaicite:28]{index=28}

(2025) Sinn 104 Classic 12 “Ceramic 12-hour”:

A closely related evolution that swaps the minute bezel for a ceramic 12-hour ring, a black sunburst dial and travel-ready reading; it keeps the compact 41 mm stance and SW220-1 while nudging the brief toward everyday timezone tracking.

Conclusion

A clear, versatile instrument, the Sinn 104 St targets wearers who want a legible 200 m day/date tool that moves from cockpit to office without fuss; to choose, start with dial (I/A) and bracelet, then confirm on-wrist the compact stance and bezel handling, and weigh impressions against Dialicious customer reviews for comfort and long-term hold.

(Updated October 2025)