Valjoux 7730 Bi-Compax Mechanical Chronograph Watch Movement

Authentic Calibre Valjoux 7730 mechanical (hand winding) watch movement.

This is the bi-compax (with two small registers) movement for some vintage 1960s Breitling Top Time models.

DESCRIPTION

Valjoux 7730, Swiss Made. mechanical calibre.

Diameter: 31 mm (14 ”), heigth 6.61 mm – 17 rubies..

PERFORMANCE

Balance frequency: 18,000 vibrations per hour (2.5 Hz).

Power reserve: about 45 hours.

DISPLAY

Time: central hours — central minutes — 60 seconds counter at 9:00.

Chronograph: central seconds — 45 minutes counter at 3:00.

DECORATION

Movement marked “SEVENTEEN  17 JEWELS — UNADJUSTED  | 7730”.

The movement is new and working but it was never tested for precision. As for any other vintage or unused movement, a basic revision is recommended.

The article is for sale AS IS – any other parts that are not mentioned in the description , or not showing in the photos, are not included with this movement.

All the movements in our offers are original service or replacement parts meant to be used by professionals for watch servicing. The movements are handled and stored in different boxes or containers, operations that may affect their accuracy. These movements are supposed to be cleaned, oiled, timed or adjusted by a professional before fully corresponding to the manufacturer specifications.