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ETA 997
Jewels: 17
Power Reserve: 34 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: 1910-1945
Diameter: 43.1 mm
Height: 6.65 mm
Hands: 1.65 x 0.92 / 0.25 mm
The ETA 997 is a mechanical watch movement that was produced from 1910 to 1945, with a total of 357,700 units manufactured. It is an open face calibre, specifically the model 7, featuring a bimetallic screw balance and a Breguet hairspring. The movement incorporates a negative stem mechanism, allowing for switching between winding and setting the watch. Additionally, it utilizes a modified escapement in lever position setting. The ETA 997 offers the following functions: stem wind, with the ability to switch using the crown or lever, and features a sub-second hand.
The ETA 997 features the following functions:
- Stem wind with switching by crown or lever
- Sub Second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 2.64 x 0.190 x 560 x 16.0 mm | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
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