====== Valjoux 7730 ======
The [[Valjoux]] calibres **7730**, **7731**, **7734**, **7736** and **7737** are [[chronograph]] movements produced from [[1966]] to [[1978]] based on the [[1948]] [[Venus 188]] design.

When Valjoux absorbed storied chronograph maker [[Venus]] in [[1966]], they discontinued that company's high-end [[column wheel]] chronograph movements and focused instead on the price-optimized [[Venus 188]] family. These used a [[cam switching]] technique that was cheaper to manufacture, and would go on to be used in the [[Valjoux 7750]], still in production today and perhaps the most popular chronograph movement of all time.

The Valjoux 7730 was essentially identical to the Venus 188. It is a 14 [[ligne]], [[hand winding]], [[cam switching]] chronograph movement with 17 jewels and running at 18,000 A/h.

The 7730 was redesigned in [[1969]] with different reset hammers, giving the 7733/34/36/37 series. It was further modified two more times in the 1970's. The date feature on the 7734 was not [[quickset]].

===== Variants =====
  * Initial series
    * 7730 (1966-1973) - Small seconds at 9 00, 30-minute counter at 3 00
    * 7731 - Same as 7730 but with new balance cock
  * Redesign
    * 7733 (1969-1978) - Small seconds at 9 00, 30-minute counter at 3 00
    * 7734 - Small seconds at 9 00, 30-minute counter at 3 00, date wheel
    * 7736 - Small seconds at 9 00, 30-minute counter at 3 00, 12 hour counter at 6 00
    * 7737 - Small seconds at 9 00, 60 second sweep, 10 minute countdown for [[regatta countdown|regatta start]]


<WRAP ud ud_mov>

**Description:**
  * [[Hand winding]] [[cam switching]] [[chronograph]]

**Functions:**
  * Hours, minutes
  * [[Small seconds]] at 9 00
  * 30-minutes counter at 3 00

**Data:**
  * 14 [[ligne]]s
  * D 31 mm, H 6.0 mm
  * 17 [[jewels]]
  * 18,000 A/h
  * Power reserve 45 Hours

**Production period:**
  * [[1966]]-[[1978]]
</WRAP>

{{tag>Movements Chronograph_movements Manual_winding_movements Valjoux_calibres}}