Overview
Description
Pilot Helmut Sinn founded the firm in 1961 to sell cockpit‑style chronographs at fair prices. Under engineer Lothar Schmidt (since 1994) Sinn patented Tegiment surface‑hardening, DIAPAL lubricant‑free escapements and Ar‑drying capsules. U‑series dive watches use German Navy submarine steel; EZM chronographs serve firefighters, police and rescue teams. Independence and DIN 8330 Flight Chronometer certification anchor its no‑nonsense ethos.
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