ETA 2824-2

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ETA 2824-2
© ETA

The ETA 2824 is a family of automatic movements from ETA. It is part of the ETA 2800 family of movements.

History

Introduced in 1961, the 2824 traces its roots to the Eterna 1427 design. It began at 18,000 beats per hour but today typically operates at the Swiss standard 28,800 beats per hour, with 36,000 beat versions produced as well. The direct predecessor was Eterna's 1541, which was sampled in 1967 with and without the "ETA 2824" stamp.

The 2824 shares a 11½ ligne (25.6 mm) case diameter with its "big brother", the ETA 2892, though this movement is slightly thicker at 4.6 mm. The 2824 also sports larger wheels and balance and fits the automatic unit entirely above the top plate. It is a mechanical movement with automatical winding, ball-bearing rotor, bi-directional winding, power reserve: 38-40 hours, hacking seconds.

This movement is one of the best known and most widely used mechanical movements at all. It is considered to be accurate, robust and reliable. It is delivered by ETA in four quality levels (Standard, Elaboré, Top and Chronomètre), of which the highest is certifiable as a chronometer.

Ebauche Variants

With Swatch Group curtailing deliveries to third-party customers, Sellita has begun producing a "generic" 2824-2 movement they call the Sellita SW 200. 2824 replacements include:

Movement family

Belongs to the family ETA 2801: Hand-winding

Description:

Self-winding movement, central rotor, bi-directional winding
Incabloc shock protection
Escapement: Stone lever
Yoke winding system
ETACHRON regulator system

Functions:

Hours, minutes
Central seconds with hacking seconds
Date with quickset date feature

Data:

11½ lignes
D 25.6 mm, H 4.6 mm
25 jewels
28,800 A/h
Power reserve 38-40 h

Production period:

Since 1982

External Links