Girard-Perregaux

Swiss Watch Fair 1969 BP 38 H
For engineors, electronics technicians and others, a particularly antimagnctic model. A protective screen under the caso shields the movement from magnetic fields up to 200 Gauss Other features : high-frequoncy (36.000 vibrations/hour) automatic movement, suspensed in the case for full shock protection, “technical” minute-circle with 300 di-visions. (GIRARD-PERREGAUX)