Sinn Spezialuhren is a German precision engineering watchmaker specializing in high-performance tool watches for professional and extreme environments. Known for its innovative technologies and no-nonsense design, the brand combines scientific approach to watchmaking with rugged functionality, catering to pilots, divers, engineers, and military personnel. The brand's design philosophy emphasizes technical perfection and durability, featuring proprietary technologies like Tegimented hardened steel, Ar-Dehumidifying technology, and magnetic field protection. Key product lines include the EZM (Mission Timer) series for emergency responders, U-series diving watches, and chronographs tested in space. Unique selling points include certified tool watch functionality (DIN, ISO standards), visible engineering (skeletonized models), and extreme environment testing (from Arctic expeditions to space missions).
Sinn Spezialuhren
1961
Founded by flight instructor and pilot Helmut Sinn in Frankfurt, initially producing pilot's chronographs and navigation clocks.
1968
Launched the iconic Sinn 103 chronograph, establishing the brand's reputation for professional aviation timepieces.
1994
Lothar Schmidt (former IWC engineer) acquires the company, ushering in a new era of technical innovations.
1997
Introduced the U1 diving watch with submarine steel case, beginning the U-series of professional dive watches.
2001
Developed the patented Tegiment technology for ultra-hardened watch cases and bracelets.
2005
Launched the EZM 10 mission timer for German special forces (GSG9), featuring unique countdown function.
2011
Presented the Frankfurt Financial District watch with oil-filled case for superior readability, winning multiple design awards.
2015
Introduced the 903 St BE UTC, tested by ESA astronaut Reinhard Furrer during space missions.
2018
Released the 105 UTC with temperature-resistant movement (-45°C to +80°C) for extreme environments.
2021
Celebrated 60th anniversary with limited edition 103 Ti ARKTIS, tested in Arctic conditions.
2023
Launched the 140 S with fully skeletonized movement, showcasing technical craftsmanship.
