For some, time is a philosophical concept. For others, it's a precisely measurable unit. For SINN, it is both. Our watches unite traditional fine craftsmanship with pioneering innovations. The result: timepieces that people can rely on throughout their lives and that guarantee the highest precision even under extreme conditions. This reliability can be experienced firsthand and verified by objective methods.
TESTAF represents the first ever standard to define pilot's watches in professional use.
The Faculty of Aerospace Technology at the Aachen University of Applied Sciences (FH), headed by Prof. Dr.-Ing. Frank Janser, and Sinn Spezialuhren joined forces to develop a technical standard for pilot's watches (TESTAF) in a research project lasting several years.