Omega Calibre 1365 Quartz Movement

The Gilded Hour Movement Archive

Omega calibre 1365 is an ultra thin two hand quartz movement introduced in 1980. Omega’s historical nomenclature records it as the Criquet: a 19.40 mm, 9 jewel, 32,768 Hz calibre only 1.90 mm high, designed around electronic push button correction and used in slender De Ville watches.

Verified battery reference
364 / SR621SW
Later Omega service reference: 1447011

The specified modern cell is a 1.55 V low drain silver oxide 364 / SR621SW, approximately 6.8 mm × 2.15 mm. Omega’s original technical material used the 9911 battery family designation. A 321 / SR616SW is the same approximate diameter but is thinner and is not the specified battery.

Omega calibre 1365 quartz movement, front and battery side views from Omega technical documentation
Calibre views from Omega technical documentation for calibre 1365. Clean crop prepared by The Gilded Hour; true geometry and markings retained.

Omega 1365 technical specifications

Year 1980
Historical name Criquet
Diameter 19.40 mm
Movement height 1.90 mm
Height on battery 2.60 mm
Jewels 9
Quartz frequency 32,768 Hz
Display Hours and minutes
Setting Electronic correction by recessed push button
Battery 364 / SR621SW
Original average consumption 0.45 µA
Original maximum consumption 0.60 µA
Minimum functioning voltage ≤ 1.20 V
Original stated running time Average approximately 2 years
Historical production record 596,000 pieces

Does Omega 1365 have an ETA equivalent?

No direct ETA equivalent is confirmed in Omega’s calibre nomenclature. Omega explicitly names ETA bases for many other quartz calibres, but records the 1365 as an Omega calibre without an ETA number. It should therefore be sourced and identified as Omega 1365 unless a specific component interchange is independently verified.

Design, history and identification

The 1365 is notable for its extremely thin 1.90 mm architecture. Omega describes it historically as the Criquet ultraplat à poussoir, or ultra thin push button calibre, and associates it with De Ville. Omega’s nomenclature records approximately 596,000 pieces. Because several quartz De Ville cases look similar externally, the calibre should be confirmed from the movement itself or model specific documentation rather than inferred from the case alone.

Technical documents

Omega factory service reference

Omega factory spare parts and service reference for calibre 1365. This is a parts and service sheet rather than a full overhaul manual.

Open Omega 1365 parts & service sheet
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FAQ

What battery does Omega 1365 use?
364 / SR621SW, 1.55 V low drain silver oxide.
Can a 321 replace it?
No. The 321 / SR616SW is thinner and is not the specified cell.
How is the time set?
Electronically through a recessed case push button rather than a conventional crown setting system.
Is it ETA based?
No direct ETA base is identified by Omega for calibre 1365.
Gilded Hour verification standard
Battery, dimensions and electrical data are drawn from Omega technical material and later Omega workshop references; historical nomenclature data is identified separately. No ETA relationship is inferred where Omega does not document one.
Last reviewed by The Gilded Hour: 15 September 2026.