The ETA 2804-2 is a reliable manual-wind mechanical movement from ETA’s Mecaline family, prized by watch enthusiasts for its precision and serviceability.
Key Specifications
This Swiss-made caliber measures 25.60mm in diameter and 3.35mm thick, with 17 jewels and a beat rate of 28,800 vibrations per hour (4Hz).
It offers hours, minutes, central sweeping seconds, and a date window at 3:00, powered by a 42-46 hour reserve when fully wound.
The Etachron regulator and Incabloc/Novodiac shock protection ensure durability in daily use.
Comparison to Related Calibers
Vs. ETA 2801-2: Adds date complication while sharing the hand-wound base; no automatic winding.
Vs. ETA 2824-2: Manual version of the automatic 2824-2, with fewer jewels (17 vs. 25) but similar frequency and reliability.
Family ties: Part of the 28,800 A/h series, including 2816 (day-date) and 2824 variants.
Parts and Serviceability
Common spares include barrel arbor (#195), escape wheel (#705), and date wheels like #2557/1, making repairs straightforward for professionals.
Parts compatibility spans ETA 2801-2 to 2836-2, with nickel-plated balance and Nivarox hairspring in standard grades.
Accuracy targets +12 seconds/day (standard), with elaborated/top grades improving to +7/+4 seconds.
Legacy and Use
Introduced as a robust workhorse, the 2804-2 powers vintage and modern watches, valued for easy regulation and widespread watchmaker familiarity.
For any Watch Spare Parts inquiry, Email us for rate and availability: [email protected]
Watch Parts Enquiry
* If you are unable to fill out any of the required information fields, please type “N/A”.
Stem, Crown, Hands & Spares might be available for this movement.
Email us for rate and availability: [email protected]
Mobile/WhatsApp: +91- 9841 360 340