| Brand: | ETA | 
|
|---|---|---|
| Family: | ||
| Height: | 5.05 mm | |
| Jewels: | 21 | |
| Reserve: | hours | |
| Frequency: | 21600 A/h | |
| Winding: | Automatic | |
| Diameter: | 25.60 mm (11.5 ligne) | |
| Complications: | Date, Day, Instant Date Change, Instant Day Change, Quick Date Correction | |
| Hands: | Central Hour Hand, Central Minute Hand, Central Seconds Hand, Date Window at 3:00, Day Window at 3:00 | |
| Production: – | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Cal. 2846 was a cost-reduced version of ETA 2828 produced for Swatch but also offered to other manufacturers.