Girard-Perregaux Chronomètre HF

Swiss Tatch Fair BF 1967
A self-winding version of the "High Frequency n watch unveiled last year in a manually-wound version, is now available. The extremely high vibration rate of its balance-wheel (36,000 v/h) endows it with an extraordinary degree of precision The width and thickness of its case nevertheless remain those of a standard wristwatch (GIRARD-PERREGAUX Chronometer HF)