ETA Cal. 2804-2 is a hand-winding movement. It is a date-only variant of ETA 2801-2 and is closely related to the automatic ETA 2824-2 and ETA 2836-2.
ETA places Cal. 2804-2 in their standard “Mecaline” line and it remains in production as of 2019. It is the updated version of Cal. 2804.
Sellita sells a similar movement, Cal. SW215-1, though it has 19 jewels instead of 17.
Current ETA 2800 Family
The ETA 2800 family currently consists of six movements in production since 1982. They are compact but not particularly slim automatic movements operating at 28,800 A/h. The basic Cal. 2824-2 and 2836-2 are among the most widely-used movements in modern Swiss watches. Although over 5 dozen different movements in this series have been produced, just six are available today. Due to restrictions from Swiss COMCO regulations, ETA is unable to sell movements outside the Swatch Group since 2020. This has forced many watch makers to turn to the similar Sellita SW200 series of movements.
Calibres 2801-2, 2824-2, and 2826-2 are officially listed as “phased out” by ETA after 2021, leaving just Calibres 2804-2, 2834-2, and 2836-2 available for sale. This is in keeping with ETA’s focus on proprietary movements for Swatch group companies rather than outside customers.
| Calibre | Year | Diameter (mm) | Height (mm) | Jewels | Winding | Sellita Calibre | Notes |
|---|---|---|---|---|---|---|---|
| ETA 2801-2 | 1983 | 25.60 | 3.35 | 17 | Manual | SW210-1 | |
| ETA 2804-2 | 1982 | 25.60 | 3.35 | 17 | Manual | SW215-1 | Date |
| ETA 2824-2 | 1982 | 25.60 | 4.60 | 25 | Automatic | SW200-1 | Date |
| ETA 2826-2 | 2004 | 25.60 | 6.20 | 25 | Automatic | N/A | Big Date |
| ETA 2836-2 | 1982 | 25.60 | 5.05 | 25 | Automatic | SW220-1 | Day-Date |
| ETA 2834-2 | 1982 | 29.00 | 5.05 | 25 | Automatic | SW240-1 | Outer Day-Date |