| Brand: | Valjoux | 
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|---|---|---|
| Family: | ||
| Height: | 6.0 mm | |
| Jewels: | 17 | |
| Reserve: | 45 hours | |
| Frequency: | 18000 A/h | |
| Winding: | Hand winding | |
| Diameter: | 31.0 mm (14 ligne) | |
| Complications: | 2-Button, Cam Switching Chronograph, Chronograph | |
| Hands: | 30 Minute Chronograph Hand at 3:00, 45 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00 | |
| Production: 1966 – 1973 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Valjoux Cal. 7730 is a cam-switching chronograph movement based on the Venus 188. After Valjoux acquired Venus in 1966, the company took the affordable Venus Cal. 188 architecture and launched a new Valjoux-branded movement. The only notable change was the use of a mobile stud carrier. Cal. 7730 was produced from 1966 through 1973 with a reported 175,000 examples produced. It was replaced by the redesigned Valjoux 7733 starting in 1969.
Cal. 7731 is essentially the same movement with a new balance cock.
