Calibre 354 — chronometer with swan-neck regulator

In brief

A swan-neck regulator — the fine-adjustment fitting Omega normally kept for its chronometer calibres — is what sets the 354 apart. The rest is family standard: the centre-seconds layout, 17 jewels, 19,800 vph.

Short history

It dates from 1953, near the end of Omega's bumper automatic production, and carries one of the most sophisticated regulating systems in the whole family. Swan-neck regulators were normally kept for the versions that made the strongest claims on accuracy.

Watches that used it

• Omega chronometer automatics, early 1950s