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Ronda 1213-21
Basic Information
| Name | Ronda 1213-21 |
|---|---|
| Manufacturer | Ronda AG |
| Launch Year | 1970 |
| Caliber Family | Description pin lever / Swiss lever: 1x11/1x31: manual, no second 1x13/1x33: manual, sweep second 1x15/1x35: manual, sweep second, date 1x16/1x36: auto, sweep second 1x17/1x37: manual, sweep second, day, date 1x18/1x38: auto, sweep second, date 1x19/1x39: auto, sweep second, day, date 1x21/1x41: manual, sweep second, digital display 1x23/1x43: manual, sweep second, alarm 1x26/1x46: auto, sweep second, digital display 1x66/1x86: auto, digital display incl. second x=0: 10.5" x=1: 11.5" x=2: 12" x=3: 13.5" suffix -21: 21600A/h Swiss-lever movements normally have the singature RAX under the balance, but some also RL like the pin levers. Not all variants were actually made. Only those are listed, which are actually known or contained in current registers. Related calibers Ronda 1011, Ronda 1013, Ronda 1013-21, Ronda 1015, Ronda 1015-21, Ronda 1017, Ronda 1017-21, Ronda 1021-21, Ronda 1031, Ronda 1033, Ronda 1033-21, Ronda 1035, Ronda 1035-21, Ronda 1037, Ronda 1037-21, Ronda 1041-21, Ronda 1111, Ronda 1113, Ronda 1113-21, Ronda 1115, Ronda 1115-21, Ronda 1117, Ronda 1117-21, Ronda 1131, Ronda 1133, Ronda 1133-21, Ronda 1135, Ronda 1135-21, Ronda 1137, Ronda 1137-21, Ronda 1211, Ronda 1213, Ronda 1213-21, Ronda 1215, Ronda 1215-21, Ronda 1216, Ronda 1216-21, Ronda 1217, Ronda 1217-21, Ronda 1218, Ronda 1218-21, Ronda 1219, Ronda 1219-21, Ronda 1221-21, Ronda 1223, Ronda 1223-21, Ronda 1226-21, Ronda 1231, Ronda 1233, Ronda 1233-21, Ronda 1235, Ronda 1235-21, Ronda 1236-21, Ronda 1237, Ronda 1237-21, Ronda 1238-21, Ronda 1239-21, Ronda 1241-21, Ronda 1243-21, Ronda 1246-21, Ronda 1286-21, Ronda 1311, Ronda 1313, Ronda 1313-21, Ronda 1315, Ronda 1315-21, Ronda 1317, Ronda 1317-21 |
| Is COSC certified | No |
Technical Details
| Lignes Dimensions | 12 ‴ |
|---|---|
| Dimensions | 27 mm |
| Height | 3.9 mm |
| Further Measures | Mounting Diameter (Dm): 26.6mm Stem height (T): 1.8mm Mounting Height (F): 0.9mm |
| Power Reserve | 38 hours |
| Frequency | 21,600 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Shock Protection | KIF |
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Manual |
| Escapement Type | Pin Lever |
| Control Type | Balance Wheel |
| Winding Type | Stem Winding (Crown) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 1.80 x 1.30 x 0.20mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: pin-lever escapement in late samples glued hairspring terminal (cf. Ronda 1233-21) stem mechanism without setting-lever spring strange: train and hand gear separately driven by the barrel (cf. Ronda 9011) Other data: balance staff: U3254 stem: W3215 mainspring / battery: Zf1051, 1.40 x 9.5 x 0.105 x 300mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 1, 17 |
| Signature | ca. 1970: RL, 1217-21, Jura Watch Co, Swiss, 1 Jewel; Kif-Protechoc (Ronda 1217-21, without calendar parts) |
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:34:00 PM |
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