ETA 2650

ETA Cal. 2650 is a compact automatic movement. Measuring just 7.75 ligne in diameter, it is primarily used in ladies watches. It was produced from 1971 through about 1980.

ETA produced a variety of movements in the 2600 family since the 1970s. This includes both automatic and hand-winding variants, 7.75 and 8.75 ligne sizes, and 21,600 A/h and 28,800 A/h versions. In the table below, 8.75 ligne movements are denoted with an asterisk and currently-produced movements in bold.

Calibre	Manual 21,600 A/h	Manual 28,800 A/h	Automatic 21,600 A/h	Automatic 28,800 A/h
Base	2640	2660	2650	2670
Date	2641 2691*	2661	2651	2671 2681*
Day/Date	2648	2668	2658 2688*	2678
Date Moon Phase				2675 2685*