Girard Perregaux Caliber GP 3387

Manufacturer	Girard-Perregaux
Caliber Number	GP 3387
Vibrations Per Hour	28,800 bph
Power Reserve	46 hours
Jewels	63
Functions	Hours, minutes, small seconds, 24 hour indicator, date, chronograph
Country of Manufacture	Switzerland
Known Models	Worldtime 4980