Sinn

Founded in Frankfurt in 1961 by pilot Helmut Sinn, Sinn Spezialuhren is renowned for its functional timepieces, the design of which is consistently driven by real-world application. Under Lothar Schmidt's leadership since 1994, the brand has evolved into a technological pioneer of German watchmaking. The company's profile is defined by proprietary developments such as Tegiment case hardening, Ar-Dehumidifying Technology to prevent fogging, oil-filled cases for reflection-free legibility, magnetic field protection, and certified DIN standards for diving and pilot's watches. Key models include the EZM mission timers, which were developed in response to the practical requirements of the police, fire, and rescue services. There are also the U-series divers' watches, which are made from submarine steel and are among the most robust in their class. The portfolio is completed by classics such as the 356 and 358 pilot chronographs and the Frankfurt Financial District Watch. Sinn’s direct-to-consumer sales model ensures strong value for money and a close relationship with collectors. To this day, the brand is regarded as the embodiment of the German tool watch: technically focused, resilient, and uncompromisingly functional.