https://www.iwa.info/en/ausstellerprodukte/iwa22/product-10298618/717-the-cockpit-wristwatch

The historic Nabo 17ZM cockpit clock was the inspiration for the 717. The challenge of transferring its functions into a wristwatch suitable for everyday use was realized by SINN technologies such as Ar dehumidifying technology, black hard coating on a tegimented base, and the own SZ01 chronograph movement by Sinn. Rotating bezel and cover glass made of sapphire crystal ensure 20Bar water resistance.

SINN has been creating high-quality mechanical watches since 1961. Owners of SINN watches appreciate their high level of performance, their robustness and durability, as well as the quality and precision of these timepieces. Functionality is the highest priority. SINN timepieces feature a number of technical highlights that are included for practical reasons, and not because they are fashionable. The company’s owner Lothar Schmidt puts it this way: “Products must speak for themselves.”