ETA is the largest manufacturer of watch movements in Switzerland. The company has taken on most of the Swiss movement industry over the last century, including hundreds of movements.
This page contains information on the main series of calibres from ETA.
Before the emergence of the Swatch Group, ETA was the movement supplier for Eterna inside ASUAG/Ebauches SA. It is here that many common technologies were developed, including the predecessors for the modern ETA 2824/2836 and ETA 2892 movements.
ETA's modern ETA 2000 movement is a small-size evolution of their automatic ladies movements.
ETA evolved Eterna's compact 6.75 ligne (ladies) calibre Eterna 1419 into a series of compact automatics for other manufacturers in the 1950's and 1960's. These are the first ETA movements to beat at 21,600 A/h.
ETA produced this line of compact and popular movements in the 1950's and 1960's, including their successful automatic line. All are 10.5 or 11.5 lignes in diameter and operate at 18,000 A/h.
ETA's mainstream movement line from the 1960's is mostly forgotten today, though it serves as a basis for the modern, well-known ETA 2824 and ETA 2836 movements. Like that family, this group includes 11.5 and 13 ligne movements with both manual and automatic winding. This series was one of the first high-beat movements from ETA, ranging from the basic 18,000 A/h all the way up to 36,000 A/h for the ETA 2732.
| Winding | Size (ligne) | Speed (bph) | No Date | Date Only | Day/Date |
|---|---|---|---|---|---|
| Manual | 11.5 | 18,000 | ETA 2500 | ETA 2502 | ETA 2508 ETA 2516 q |
| 21,600 | ETA 2600 | ETA 2602 | ETA 2608 | ||
| ETA 2612 q | ETA 2618 q | ||||
| 13 | 18,000 | ETA 2503 | ETA 2509 | ||
| 21,600 | ETA 2603 | ETA 2609 | |||
| Automatic | 11.5 | 18,000 | ETA 2520 | ETA 2522 | ETA 2538 q |
| ETA 2524 | ETA 2522 | ||||
| ETA 2525 | ETA 2526 | ||||
| ETA 2528 | ETA 2527 | ||||
| ETA 2529 | |||||
| ETA 2532 q | |||||
| 21,600 | ETA 2620 | ETA 2622 | ETA 2630 q | ||
| ETA 2637 q | ETA 2630 q | ||||
| ETA 2632 q | |||||
| ETA 2638 q | |||||
| 28,800 | ETA 2722 | ETA 2724 q | ETA 2728 q | ||
| 36,000 | ETA 2732 | ETA 2734 q | ETA 2738 q | ||
| 13 | 18,000 | ETA 2521 | ETA 2523 | ETA 2539 q | |
| 21,600 | ETA 2623 | ETA 2639 q |
This compact movement family is primarily used in ladies watches. It was introduced in 1971 and continues in production today. Movements operate at 21,600 or 28,800 A/h and measure 7.75 ligne in diameter. The 2640 series was derived from earlier Eterna calibres and was also sold by Eterna with an additional “1” preceding the number (e.g., 12660 = 2660).
(Current movements in bold)
| Winding | Size (ligne) | Speed (bph) | No Date | Date Only | Moon Phase | Day/Date |
|---|---|---|---|---|---|---|
| Manual | 7.75 | 21,600 | ETA 2640 | ETA 2641 | ETA 2648 | |
| 28,800 | ETA 2660 | ETA 2661 | ETA 2668 | |||
| 8.75 | 21,600 | ETA 2691 | ||||
| Automatic | 7.75 | 21,600 | ETA 2650 | ETA 2651 | ETA 2658 | |
| 28,800 | ETA 2670 | ETA 2671 | ETA 2675 | ETA 2678 | ||
| 8.75 | 21,600 | ETA 2688 | ||||
| 28,800 | ETA 2681 | ETA 2685 |
The 2750/2770 family of movements was a mainstream product for ETA through the 1970's, with production beginning around 1969 and lasting until 1982. Over 6 million hand-winding and 25 million automatics from this family were made, and they are the predecessor of the modern ETA 2824 family.
| Winding | Speed (bph) | No Date | Date Only | Day/Date |
|---|---|---|---|---|
| Manual | 21,600 | ETA 2750 | ETA 2752 ETA 2753 T ETA 2761 qh ETA 2762 q ETA 2763 q | ETA 2758 h ETA 2759 Th ETA 2768 qh ETA 2769 qqh |
| Manual | 28,800 | ETA 2751 | ETA 2754 ETA 2764 q | ETA 2760 h |
| Automatic | 21,600 | ETA 2770 ETA 2776 | ETA 2772 ETA 2773 T ETA 2781 qh ETA 2782 q ETA 2783 q | ETA 2778 h ETA 2779 Th ETA 2788 qh ETA 2789 qqh |
| Automatic | 28,800 | ETA 2771 | ETA 2774 ETA 2784 q ETA 2791 qh | ETA 2780 h ETA 2790 qqh |
This movement family is derived from the ETA 2750 and ETA 2770, which were themselves evolved from the ETA 2600 and ETA 2620 and originally the ETA 2370 and ETA 2375. Today, the most common members of this family are the ETA 2824 and ETA 2836. Note that the ETA 2892 family is technically unrelated to this, having been derived from an entirely different series of Eterna movements.
The 2800 series movements are extremely similar. Across all of the variants, 27 common parts were used. Nearly all of the parts were common to each of the three complications and sizes, and more than half were shared within each speed.
This entire series uses just six mainplates, each of the following in both 11.5 ligne and 13 ligne sizes
With three speeds available, there were also three balance/escape/fourth wheel assemblies. Those with a balance stop also had unique parts.
The family shared four mainsprings, 2 for the manual versions and 2 for the automatics.
(Current movements in bold)
| Winding | Size (ligne) | Speed (bph) | Day/Date | Date Only | No Date |
|---|---|---|---|---|---|
| Manual | 11.5 | 21,600 | ETA 2808 | ETA 2802 | ETA 2800 |
| 28,800 | ETA 2810 ETA 2816 ETA 2816-1 | ETA 2804 ETA 2804-1 ETA 2804-2 | ETA 2801 ETA 2801-1 ETA 2801-2 |
||
| 36,000 | ETA 2812 ETA 2817 | ETA 2806 | ETA 2819 | ||
| 13 | 21,600 | ETA 2809 | ETA 2803 | ||
| 28,800 | ETA 2811 | ETA 2805 | |||
| 36,000 | ETA 2813 | ETA 2807 | |||
| Automatic | 11.5 | 21,600 | ETA 2828 | ETA 2822 | ETA 2820 |
| 28,800 | ETA 2830 ETA 2836 ETA 2836-1 ETA 2836-2 | ETA 2824 ETA 2824-1 ETA 2824-2 | ETA 2821 ETA 2821-1 |
||
| 36,000 | ETA 2832 ETA 2837 | ETA 2826 ETA 2826-2 | |||
| 13 | 21,600 | ETA 2829 | ETA 2823 | ETA 2839 | |
| 28,800 | ETA 2831 ETA 2838 ETA 2834 ETA 2834-1 ETA 2834-2 | ETA 2825 | |||
| 36,000 | ETA 2833 | ETA 2827 |
Other variants
The 2840 series was closely related to the 2800 series but was cost-reduced for use in Swatch-branded automatic watches. The calibres correspond with similar-numbered 2800 movements. Only the ETA 2846 (and perhaps the ETA 2842) were made available to other manufacturers.
These differ from the 2800 series in layout but use many similar parts. They were intended as cost-reduced versions like the 2840 series, but retain dial feet and other features for use in serviceable watches.
The 289x movements are entirely different from the 2824/2836 line, being derived from the ultra-thin Eterna 1466. There have been three generations of this movement: The original 2890 and 2892 of the 1970's, the updated 2892-2 of the 1980's, and the modern 2892A2, introduced in 1999. Due to its thin profile and proven reliability, many modular movements use this calibre as a base. Notable among these is the ETA 2894-2 chronograph.
ETA's main integrated chronograph family is derived from the Valjoux 7750 line.
| Winding | Model | Year | 30 Minute Chrono | 12 Hour Chrono | Special Features |
|---|---|---|---|---|---|
| Automatic | 7750 | 1973-present | Yes | Yes | |
| 7751 | 1986-present | Yes | Yes | Full calendar with hands date, moon phase, 24-hours indication | |
| 7753 | 2002-present | Yes | Yes | Minute counter at the 3 instead of the 12, date change by pushers at the 10 | |
| 7754 | 2003-present | Yes | Yes | GMT function on additional 24-hour hand | |
| 7757 | 1985-2003 | Yes | Yes | Regatta countdown indication | |
| 7758 | 1985-2003 | Yes | Yes | Moon phase | |
| Manual | 7760 | 1985-2005 | Yes | Yes | |
| 7761 | 1986-1998 | Yes | No | ||
| 7765 | 1983-1998 | Yes | No | Date | |
| 7768 | 1985-1998 | Yes | No | Moon phase |
Hand winding movements originally created by Unitas.
Hand winding movements originally created by Peseux.