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ETA 1131
Ligne: 13.5'''
Jewels: 1/17/21
Lift Angle: 42°
Power Reserve: 36 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1975
Diameter: 31.05 mm
Height: 4.0 mm
Hands: 1.80 x 1.30 / 0.18 mm
The ETA 1131 watch movement features a pin-lever escapement and an indirectly driven minute hand, allowing for a larger balance and a low profile. It also offers the option for shock protection through elastical spiral balance spokes. This movement is a manual wind mechanism with sub second and sweep seconds functionality. It utilizes a pin lever system and was commonly used around the year 1975.
The ETA 1131 features the following functions:
- Manual Winding
- Pin lever
- Sub Second
- Sweep Seconds
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.145 x 380 x 12.0 mm | GR3530 | Manual | Buy mainspring |
| 1.35 x 0.130 x 360 x 11.5 mm | Manual | Buy mainspring | |
| 1.35 x 0.135 x 340 x 11.0 mm | GR3518 | 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) |
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Documents
Parts Listing
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