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) — Professional diving watches using submarine-grade steel and Sinn's proprietary Tegiment hardening, Ar-dehumidifying, and oil-filling technologies for extreme durability.
- Pilot Watches (EZM series) — Mission-specific pilot and special forces watches developed in partnership with German police and military units, optimised for legibility and function.
- Financial District Watches (6000 series) — Business-oriented timepieces with clean designs, named after the Frankfurt banking district where Sinn is headquartered.
- 356/556 — The brand's most popular mid-range pilot chronograph (356) and three-hand (556) models, known for outstanding value and Bauhaus-clean dials.
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.