-Specifications Brand: SINN Model: 103 Series Ref: 103.19063 Year: 1990s Movement: Self-Winding Cal.7750 (Valjoux 7750) Case: 40mm without crown and buttons Thickness: 15.5mm Material: Stainless Steel Lug Width: 20mm Bracelet: Black Leather Strap Includes: Watch and original box from 1990 Fully inspected all functions by our watchmaker 1-year Mechanical Warranty Global shipping via FedEx International Priority The official name of SINN is Sinn Spezialuhren (Sinn Special Watch Company). In 1961, Helmut Sinn, a German pilot and flight instructor, took his name on the brand and began making watches for pilots. Three principles: "Making the best watch at low cost", "High quality and best functionality and visibility", "Providing valuable products through direct marketing without relying on a wide range of advertisements" We are making watches based on. As a brand known to those in the know, it has been very popular until now. In the 90's, 142.BS was also used in the Space Shuttle mission, partly because it was actually delivered to the German Air Force and NATO Army. Even now, the diver model is actually used in GSG9 (Germany's special forces against terrorism) and fire rescue units. This 103.B series is a model that can be said to be the icon of such a gin. With excellent visibility and a very simple design, it gives the impression of a practical chronograph. This 103.B.AUTO.POL.TY model uses a smooth bezel instead of a black bezel and features a neat appearance. In addition, the inner circumference of the dial is equipped with a tachymeter and a pulse meter. The company in question is Sächsische Uhrentechnologie GmbH ( SUG) based in Glashütte, a company that has earned its place among the other historical manufacturers presented at the museum. In other words, it is the cases made by SUG in collaboration with the SINN development engineers that make SINN watches “special watches”. “Many of the technologies in SINN watches are made possible by the special construction of the watch case,” explains Ronald Boldt. Magnetic Field Protection, for example, requires the use of special materials developed to provide the particular characteristics required by the case. Of course, he is not revealing what those traits are. Fully inspected all functions by our watchmaker 1-year Mechanical Warranty