RGM Watch Company Caliber 20
RGM's second in-house movement: a tonneau-shaped hand-wound caliber with a motor-barrel winding system RGM says wasn't used in series production for over 50 years.
2 references
“Differs” marks a spec with different recorded values. — means not recorded.
| Spec | Caliber 20 — 18K Rose Gold | Caliber 20 — Stainless Steel |
|---|---|---|
| Case size | 42.5 mm | 42.5 mm |
| Thickness | 9.7 mm | 9.7 mm |
| Case Differs | 18K rose gold, Tonneau | 316L stainless steel, Tonneau |
| Case maker | RGM | RGM |
| Caliber | RGM Caliber 20 | RGM Caliber 20 |
| Movement maker | RGM | RGM |
| Movement type | Manual | Manual |
| Jewels | 19 | 19 |
| Frequency | 18000 vph | 18000 vph |