Omega Calibre 1456 Quartz Movement
Omega calibre 1456 is a compact two hand quartz movement documented by Omega from 1994. It is a 6 jewel, 32,768 Hz movement measuring 13.00 × 15.15 mm and only 1.95 mm high. Unlike several earlier Omega quartz calibres, the 1456 has a documented external base: ETA 976.001. Omega identifies it as a rhodium plated, personalised version within the calibre 1455 family.
Omega’s calibre specific guide specifies a 1.55 V low drain 321 / SR616SW, 6.80 mm × 1.60 mm. It directly cross references Renata 321, Varta V321 and SR616SW cells from Maxell, Panasonic and Sony.
Omega 1456 technical specifications
| Omega 1456 documented year | 1994 |
| Documented ETA base | ETA 976.001 |
| Family relationship | Rhodium plated / personalised version of Omega 1455 |
| Dimensions | 13.00 × 15.15 mm |
| Movement height | 1.95 mm |
| Height on battery | 2.05 mm |
| Jewels | 6 |
| Quartz frequency | 32,768 Hz |
| Display | Hours and minutes |
| Motor impulses | 3 per minute |
| Rate regulation | Inhibition |
| Battery | 321 / SR616SW |
| Omega guide battery ref | 1449934 |
| Movement consumption | ≤ 0.60 µA |
| Lower operating voltage | ≤ 1.30 V |
| Coil resistance | 2.10–2.40 kΩ |
ETA equivalent: ETA 976.001 is documented
Yes. Omega calibre 1456 has a documented ETA base: ETA 976.001. Omega’s historical nomenclature records 1456 as the rhodium plated version of calibre 1455; the 1455 lineage began from ETA 279.001 and became ETA 976.001.
That does not mean every generic ETA 976.001 is automatically a drop in replacement. Omega’s own guide describes an Omega personalised movement with circular graining, rhodium plating and gilded engraving. Stem, dial attachment, hands, movement holder and exact revision should still be verified before complete movement substitution.
Omega finishing and identification
The Omega technical guide describes calibre 1456 as an Omega personalised quartz movement with circular graining, rhodium plating and gilded engraving. Those details are useful for distinguishing an original Omega finished 1456 from a related generic ETA base.
Electrical and diagnostic reference
The calibre specific guide gives consumption of 0.60 µA or less, lower operating voltage of 1.30 V or less and coil resistance of 2.10–2.40 kΩ. Regulation is by inhibition and the stepper motor receives three impulses per minute.
Omega 1456 & ETA 976.001 service references
The Omega guide covers calibre specific electrical, battery and finishing information. Because calibre 1456 is based on ETA 976.001, the ETA technical communication is the stronger reference for the underlying parts catalogue, exploded diagrams, assembly order and lubrication points.
Compatibility note: the ETA documents describe the 976.001 base architecture. Omega 1456 has Omega specific finishing and may use Omega specific components or revisions, so parts should still be matched by reference before substitution.
FAQ
321 / SR616SW, 1.55 V low drain silver oxide.
ETA 976.001 is the documented base.
No. Omega documents its own personalised finishing and exact complete movement interchange should still be verified.
6 jewels.
Battery and electrical figures are taken from Omega’s calibre specific technical guide. ETA lineage and the 1994 1456 designation are drawn from Omega historical calibre nomenclature. ETA 976.001 documentation is used where it directly describes the documented base movement architecture.