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Brand: | ETA | 
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|---|---|---|---|
| Family: | |||
| Height: | 5.05 mm | ||
| Jewels: | 25 | ||
| Reserve: | 42 hours | ||
| Frequency: | 28800 A/h | ||
| Winding: | Automatic, Bi-Directional Automatic Winding, Central Rotor Automatic Winding | ||
| Diameter: | 29.00 mm (13 ligne) | ||
| Complications: | Date, Day, Hacking Seconds, Instant Date Change, Instant Day Change, Outer Day Wheel, Quick Date Correction | ||
| Hands: | Central Hour Hand, Central Minute Hand, Central Seconds Hand | ||
| Distinguishing Technical Characteristics | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
 Central-Rotor Automatic  Clockwise Balance Cock  Etachron Regulator |
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| Production: 1982 – Current | |||||||||||
| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
ETA Cal. 2834-2 is an automatic movement with day and date wheels. Unusually, the day function uses an outer wheel, showing the complete name at 12:00 with the date shown at 3:00. This arrangement is often associated with the famous Rolex Day-Date “President” model, though that uses a different movement. The outer wheel required a larger 13 ligne main plate.
Cal. 2834-2 is part of the standard “Mecaline” line at ETA and is still produced as of 2019. It replaced Cal. 2834-1 in 1982.
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.
