Watchatlas

Sinn

Frankfurt, Germany · Est. 1961

Founded by Helmut Sinn

Sinn was founded in Frankfurt in 1961 by Helmut Sinn, a pilot and flight instructor, with the goal of producing professional tool watches of the highest functional standard. The brand is known for its use of submarine steel, dry-capsule technology, and temperature-resistant oils, making watches genuinely more accurate and durable in extreme conditions.

Founded
1961
Headquarters
Frankfurt, Germany
Group
Independent
Price Segment
Mid
Status
Active

Key Collections

  • Instrument Watches (U-series) — Sinn U-series is the brand's professional dive-watch family, known for hard-edged instrument styling, submarine-steel identity, and models such as U1, U1 S E, and U50. Key references: U1, U1 S E, U50.
  • Pilot Watches (EZM series) — Sinn EZM is the brand's mission-timer family, built around purpose-specific instrument watches for demanding professional use, including current EZM 3, EZM 13.1, and EZM 1.1 S models. Key references: EZM 3, EZM 13.1, EZM 1.1 S.
  • Financial District Watches (6000 series) — Sinn 6000-series Financial District watches are the brand's Frankfurt-facing business chronographs, connecting Sinn's tool-watch engineering to cleaner dress-sport designs. Key references: 6000, 6000 Anniversary III, 6060.
  • 356/556 — Sinn 356/556 groups the brand's accessible pilot-watch staples: the 356 chronograph family and the clean three-hand 556 models that anchor Sinn's everyday instrument-watch reputation. Key references: 356 PILOT, 356 Sa PILOT, 556 I.

Timeline

  • 1961 — Helmut Sinn, a pilot and flight instructor, founds Sinn Spezialuhren in Frankfurt am Main to produce professional pilot's watches.
  • 1994 — Lothar Schmidt acquires the company, refocusing on technological innovation including dehumidifying technology, Tegiment hardening, and Hydro oil-filling.
  • 2003 — Develops the EZM 3 for the German Federal Police, cementing Sinn's reputation as an official supplier to special forces and emergency services.
  • 2019 — Opens the new Sinn manufacture in Frankfurt-Sossenheim, bringing movement assembly and proprietary technology production under one roof.
  • 2026 — Debuts at Watches & Wonders for the first time in the brand's history, joining 65 exhibitors. Celebrates 65th anniversary. Launches the 308 Hunting Watch with moonlight display.

Frequently Asked Questions about Sinn

What is Tegiment technology?
Tegiment is Sinn's proprietary surface-hardening process that makes steel up to 5 times harder than untreated stainless steel, dramatically improving scratch resistance on the watch case and bracelet.
What is Sinn's Ar-dehumidifying technology?
Sinn fills its watch cases with dry air or protective gas sealed with copper-sulphate capsules, preventing internal fogging and moisture damage — especially useful in extreme temperature changes.
Is Sinn related to Breitling?
Helmut Sinn sold his former company (which became part of Bell & Ross) in the 1990s. Modern Sinn Spezialuhren is fully independent and separate from any other watch brand.

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