Omega Calibre 1350 Quartz Movement
Omega calibre 1350 is an early compact quartz movement introduced in 1977. Omega’s historical nomenclature calls it the Sauterelle and records it as the first 5½ ligne quartz calibre with push button correction. It measures 13.00 × 15.15 mm, is 3.35 mm high and uses a 32,768 Hz quartz resonator.
Omega’s later workshop documentation specifies a 364 / SR621SW low drain silver oxide cell at 1.55 V, approximately 6.8 mm × 2.15 mm.
Omega 1350 technical specifications
| Year | 1977 |
| Historical name | Sauterelle |
| Dimensions | 13.00 × 15.15 mm |
| Height | 3.35 mm |
| Jewels | 2 |
| Quartz frequency | 32,768 Hz |
| Setting | Push button correction |
| Battery | 364 / SR621SW |
| Later service accuracy | −9 / +15 seconds per month |
| Later service consumption | 0.80 µA |
| Later lower working voltage | 1.25 V |
| Later battery life reference | Approximately 34 months |
| Historical successor | Omega calibre 1353 |
| Historical production | 637,000 pieces |
Original specifications versus later Omega service data
Early technical documentation reflects the launch period electronics, including an historical accuracy figure around ±30 seconds per month and roughly 36 months stated battery life.
Later Omega workshop tables list a tighter −9 / +15 seconds per month service tolerance and about 34 months battery life. These figures can coexist because later service modules and workshop standards may differ from the original 1977 electronics.
Does Omega 1350 have an ETA equivalent?
No direct ETA equivalent is identified by Omega. Omega’s nomenclature names ETA bases where applicable to many other quartz calibres but records the 1350 as its own Sauterelle calibre.
Omega 1350 and calibre 1353
Omega records the 1350 as being replaced by calibre 1353 and describes 1353 as a later trimmer regulated development. A successor relationship does not prove universal drop in interchangeability. Case controls, dial attachment, hand heights and movement retention should be checked before substitution.
History and identification
Omega’s historical nomenclature records approximately 637,000 pieces and describes the 1350 as the first 5½ ligne quartz calibre with push button correction. The movement should be identified directly or through model specific documentation rather than by case styling alone.
Omega calibre 1350 technical guide
Dedicated Omega technical guide covering calibre specific technical and service information.
Open Omega 1350 technical guideFAQ
364 / SR621SW, 1.55 V low drain silver oxide.
2 jewels.
No. 1353 is the later development/replacement; that does not automatically make the complete movements interchangeable in every case.
No direct ETA base is identified by Omega for calibre 1350.
Original-period data and later Omega service specifications are labelled separately rather than silently blended. ETA lineage is stated only where Omega documents it.