Ronda 715 caliber vs Seiko 6R15 caliber: specs compared
Updated 05 September 2026.
10
specs differ
Ronda 715 caliber and Seiko 6R15 caliber differ on 10 specs: maker, size, casing diameter, movement height, frequency, jewels.
| Spec | Ronda 715 caliber | Seiko 6R15 caliber |
|---|---|---|
| Maker | Ronda | Seiko |
| Size | 11 1/2 ligne | 12 ligne |
| Casing diameter | 26.20 mm | 27.40 mm |
| Movement height | 2.50 mm | 5.25 mm |
| Frequency | 32,768 Hz quartz | 21,600 A/h (3 Hz) |
| Jewels | 1 or 5 | 23 |
| Winding | quartz, battery 371 | automatic, bidirectional, hacking and hand-wind |
| Calendar / layout | centre seconds, date at 3 or 6 | centre seconds, date at 3 |
| Hand fitting | hour 1.50 / minute 0.90 / second 0.20 mm (bore) | hour 1.50 / minute 0.90 / second 0.20 mm (bore) |
| Stem | Ronda 700-series stem | 6R15 stem |
| Power reserve | battery 371, up to 60 months | approx. 50 h |
Questions and answers
How do Ronda 715 caliber and Seiko 6R15 caliber compare?
Ronda 715 caliber and Seiko 6R15 caliber differ on 10 specs: maker, size, casing diameter, movement height, frequency, jewels.