ETA 901.001 caliber vs ETA 955.112 caliber: specs compared
Updated 05 September 2026.
9
specs differ
ETA 901.001 caliber and ETA 955.112 caliber differ on 9 specs: size, casing diameter, movement height, jewels, winding, calendar / layout.
| Spec | ETA 901.001 caliber | ETA 955.112 caliber |
|---|---|---|
| Maker | ETA (Swatch Group) | ETA (Swatch Group) |
| Size | 7 3/4 ligne | 11 1/2 ligne |
| Casing diameter | 17.20 mm | 25.60 mm |
| Movement height | 3.20 mm | 3.15 mm |
| Frequency | 32,768 Hz quartz | 32,768 Hz quartz |
| Jewels | 1 | 7 |
| Winding | quartz, battery 364 (SR621SW) | quartz, battery 371 (SR920SW) |
| Calendar / layout | centre seconds, no date | centre seconds, date at 3 |
| Hand fitting | small-caliber hour / minute / second bores | hour 1.50 / minute 0.90 / second 0.20 mm (bore) |
| Stem | 901 stem | 955 stem |
| Power reserve | battery, up to 40 months | battery, up to 50 months |
Questions and answers
How do ETA 901.001 caliber and ETA 955.112 caliber compare?
ETA 901.001 caliber and ETA 955.112 caliber differ on 9 specs: size, casing diameter, movement height, jewels, winding, calendar / layout.