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Ronda 1021-21
Ligne: 10.5'''
Jewels: 17
Power Reserve: 45 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1964
Diameter: 23.6 mm
Height: 3.85 mm
Hands: 1.50 x 0.90 x 0.20 mm
Base: Seiko 4361
The Ronda 1021-21 is a manual-wind mechanical watch movement that was commonly used around 1964. It features a stem mechanism without a setting-lever spring. Additionally, it incorporates Diafix combined settings for the escapement wheel. This movement includes various functions such as sweep seconds, an adjustable stud holder, and shock protection.
The Ronda 1021-21 features the following functions:
- Adjustable Stud Holder
- Manual Winding
- Shock Protection
- Sweep second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.35 x 0.110 x 380 x 9.0 mm | GR3510 | Manual | Buy mainspring |
| 1.30 x 0.115 x 340 x 10.0 mm | GR3296 | 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
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