ETA Valjoux 7750 caliber vs Miyota 8205 caliber: specs compared
Updated 05 September 2026.
10
specs differ
ETA Valjoux 7750 caliber and Miyota 8205 caliber differ on 10 specs: maker, size, casing diameter, movement height, frequency, jewels.
| Spec | ETA Valjoux 7750 caliber | Miyota 8205 caliber |
|---|---|---|
| Maker | ETA (Swatch Group) | Citizen Miyota |
| Size | 13 1/4 ligne | 11 1/2 ligne |
| Casing diameter | 30.00 mm | 26.00 mm |
| Movement height | 7.90 mm | 5.67 mm |
| Frequency | 28,800 A/h (4 Hz) | 21,600 A/h (3 Hz) |
| Jewels | 25 | 21 |
| Winding | automatic, unidirectional | automatic, unidirectional |
| Calendar / layout | chronograph, subdials at 6-9-12, day and date at 3 | centre seconds, day and date at 3 |
| Hand fitting | chronograph, subdial and centre hands per 7750 spec | hour 1.50 / minute 0.90 / second 0.20 mm (bore) |
| Stem | 7750 stem | 8200-series stem |
| Power reserve | approx. 48 h | approx. 42 h |
Questions and answers
How do ETA Valjoux 7750 caliber and Miyota 8205 caliber compare?
ETA Valjoux 7750 caliber and Miyota 8205 caliber differ on 10 specs: maker, size, casing diameter, movement height, frequency, jewels.