Brand | ETA |
Caliber Number | 2892-A2 |
Base Caliber | ETA 2892 |
Movement Type | Automatic |
Jewels | 21 |
Diameter | 11 1/2”’ (25.60mm) |
Height | 3.6mm |
Power Reserve | 42 hours |
Lift Angle | 51 degrees |
Vibrations Per Hour | 28,800 (4 Hz) |
Shock System | Incabloc |
Regulator System | ETACHRON |
Rotor | Ball bearing system |
Winding Direction | Bi-directional |
Hacking? | Yes |
Features | Hours, minutes, central seconds, date |
Country of Manufacture | Switzerland |
Known Models | Too many to list… (add yours in the comments below) |
The ETA 2892-A2 is based on the original ETA caliber 2892 automatic watch movement.
Accuracy
Accuracy of the ETA caliber 2892-A2 can range from as much as +/-20 seconds per day to just +/-5 seconds/day. The accuracy that your watch experiences depends on the grade that the watch manufacturer chose to power their watches.
Grades
Similar to other ETA movements, there are 3 grades of production quality.
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- Elaborated Grade – Adjusted to four positions / average accuracy of +/-5 sec/day to +/-20 sec/day.
- Top Grade – Adjusted to five positions / average accuracy of +/-4 sec/day to +/-15 sec/day.
- Chronometer (COSC) Grade – Adjusted to five positions / average accuracy of -4/+6 sec/day.
From Wikipedia:
The key components which differ at the line of demarcation between Elaborated and Top are the pallet stones, balance wheel & hairspring, and the regulator mechanism. The degree of decoration on the movement’s parts also increases with the grade. –Source
Examples of watches with this caliber
Extra Information
- Official 2892-A2 tech sheet here
- Shop watches with 2892-A2 here
Please share your experiences and thoughts about the ETA caliber 2892-A2 in the comments below…