Steel case: 36.2 mm. GP movement GP 352. Quartz controlled stepper motor. Sweeping seconds. Date: quick-set. Date display. 13.5", diameter: 30.0 mm. Height: 7.3 mm. 0 jewels. F = 32,768 Hz. Stem GP 352. Mainspring/battery. 313 (original, mercury), 357 (replacement, silver oxide). Steel case back. White dial. Date display at 3 o'clock. Sapphire crystal. Steel crown. Original steel bracelet. Diameter: 22 cm. Length: 18 cm. In very good condition. In working order, accurate and precise. Excellent aesthetic condition. Very slight hairlines on the case. Case back with signs of wear normal for vintage items. Light polish. Ultrasound cleaning. Recently serviced. Original, rare box (see photos). Girard Perregaux has always been a pioneer in the watchmaking sector, with its own internal research department. In the mid 1960s, GP, financed by Jaeger Le Coultre, hired an electronics expert Georges Vuffray to develop a quartz watch and to subsequently miniaturise the technology in a wristwatch case. With the help of Motorola who produced the chip, GP managed to present its prototype Electron at the 1970 Baselworld. A new innovative and revolutionary technology was born, that marked new limits for wristwatch making, thanks to its reliability and precision. The movement was then shared with Jaeger Le Coultre. It is a collector's item. With rare elegance on the wrist. Classic, sporty and dynamic, timeless. In Girard Perregaux style. Sophisticated and subtle. Exhaustive photos The photos have been enlarged to highlight the details which are not noticeable to the human eye. I only sell watches chosen with dedication and expertise, elegant, reliable, and of proven quality. Primary shipment, international shipping service