Ronda 4220.B caliber vs Ronda 5021.D caliber: specs compared
Updated 05 September 2026.
6
specs differ
Ronda 4220.B caliber and Ronda 5021.D caliber differ on 6 specs: casing diameter, jewels, calendar / layout, hand fitting, stem, power reserve.
| Spec | Ronda 4220.B caliber | Ronda 5021.D caliber |
|---|---|---|
| Maker | Ronda | Ronda |
| Size | 12 1/2 ligne | 12 1/2 ligne |
| Casing diameter | 28.00 mm | 28.60 mm |
| Movement height | 4.40 mm | 4.40 mm |
| Frequency | 32,768 Hz quartz | 32,768 Hz quartz |
| Jewels | 7 | 5 or 10 |
| Winding | quartz, battery cell | quartz, battery cell |
| Calendar / layout | centre seconds, date at 3 | bicompax chronograph, two sub-dials, date |
| Hand fitting | hour / minute / second | chronograph, sub-dial and centre hands |
| Stem | Ronda 4000-series stem | Ronda 5000-series stem |
| Power reserve | battery, up to 54 months | battery, multi-year |
Questions and answers
How do Ronda 4220.B caliber and Ronda 5021.D caliber compare?
Ronda 4220.B caliber and Ronda 5021.D caliber differ on 6 specs: casing diameter, jewels, calendar / layout, hand fitting, stem, power reserve.