Ronda 6203.B caliber vs Seiko 4R34 caliber: specs compared
Updated 05 September 2026.
11
specs differ
Ronda 6203.B caliber and Seiko 4R34 caliber differ on 11 specs: maker, size, casing diameter, movement height, frequency, jewels.
| Spec | Ronda 6203.B caliber | Seiko 4R34 caliber |
|---|---|---|
| Maker | Ronda | Seiko |
| Size | 11 1/2 ligne | 12 ligne |
| Casing diameter | 26.00 mm | 27.40 mm |
| Movement height | 3.30 mm | 5.32 mm |
| Frequency | 32,768 Hz quartz | 21,600 A/h (3 Hz) |
| Jewels | 1 or 5 | 24 |
| Winding | quartz, battery cell | automatic, bidirectional, hacking and hand-wind |
| Calendar / layout | dual time and date at 3 | centre seconds, GMT 24h hand, date at 3 |
| Hand fitting | hour / minute / second plus 24h sub-hand | hour 1.50 / minute 0.90 / second 0.20 mm (bore), plus 24h GMT hand |
| Stem | Ronda 6000-series stem | 4R34 stem |
| Power reserve | battery | approx. 41 h |
Questions and answers
How do Ronda 6203.B caliber and Seiko 4R34 caliber compare?
Ronda 6203.B caliber and Seiko 4R34 caliber differ on 11 specs: maker, size, casing diameter, movement height, frequency, jewels.