Wyler “Electronic”

Swiss Watch Fair 1969 BF 34
This model has a case with transparent plexiglass back. The working of the electronic movement with balance-wheel can thus be observed. All-steel or 13ct gold models also available. Monocoque (one piece) case. Highly legible “technical” minute-circuit on the dial, a characteristic feature of modern, accurate watches. With calendar (WYLER “Electronic”)