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Eterna 1323U
Ligne: 11.5'''
Jewels: 20
Power Reserve: 43 hrs
Frequency: 21600 vph
Type: Automatic
Diameter: 26 mm
Height: 5.3 mm
Hands: 1.50 x 0.90 x 0.21 mm
The Eterna 1323U watch movement features a ball-bearing rotor and a sophisticated excenter self-winding mechanism with just one gear stage. This mechanism, referred to as the "magic lever" from Seiko automatics in the 1970s, was already utilized in the early Otero automatics from the 1950s. The automatic module of the movement is constructed using only two screws to hold all its parts together. The mainsprings of the Otero 800 to 907 series have slightly varying specifications, although these differences are not considered significant. Functionally, the Eterna 1323U movement offers automatic winding and a sweep second hand.
The Eterna 1323U features the following functions:
- Automatic Winding
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
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Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.20 x 0.100 x 9.5 mm | Auto | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
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Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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