Technological distinctiveness calls for customized manufacturing. And the process can only begin when all components have successfully passed quality controls. Following dial assembly, mounting of the hands and setting into the case, a radio-controlled timepiece goes through very special tests, such as a time signal reception sensitivity test for different frequencies in our in-house time tunnel. A mechanical Junghans will remain with a single watchmaker or a small team of specialists, who are fully responsible for its development from the first moment onwards, all the way through to power reserve fine-tuning and final water-resistance testing.