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HEUER Leonidas Valjoux 7734 Bi-Compax Chronograph Watch Movement

750 CHF

Out of stock

750 CHF


Authentic HEUER Calibre Valjoux 7734 mechanical (hand winding) watch movement.

This is the bi-compax (with two small registers) original movement for Heuer models..


Valjoux 7734, Swiss Made. mechanical calibre.

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


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

Power reserve: about 45 hours.


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

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

Date disc: “roulette” type, positioned for date opening at 6:00.


Movement marked “HEUER LEONIDAS SASEVENTEEN / 17 JEWELSUNADJUSTEDheuer leonidas valjoux 7734 bi compax chronograph watch movement | 7734”.

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

The article is sold as is – any other parts that are not visible in the photos or mentioned in the description, are considered as not included with this article.

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.


Additional information


18000 A/h



Power Reserve

ca. 45 hours


Chronograph, Date Window


Small second, Swiss Made

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