====== ETA 2678 ======
{{wst>image_cr|ETA|2678}}

The **ETA 2678** is a compact automatic watch calibre produced by [[ETA]]. It was introduced in [[1971]] and remains in production [[as of 2019]].

===== Overview =====
Designed for ladies watches and other small applications, the 2678 measures just 7¾ [[ligne]]s (17.2 mm) in diameter and is 5.35 mm tall. It includes hour, minute, and second hands and both day and date wheels. The slightly thinner [[ETA 2671]] is similar but omits the day wheel.

Mechanical movement with [[automatic]] winding, ball-bearing [[rotor]], bi-directional winding, [[power reserve]] 38 hours, date with [[quickset]], [[hacking seconds]].

The movement is used for ladies' watches. It extends the [[ETA 2671]] with a weekday display.


<WRAP ud ud_mov>

**Description:**
  * [[Self-winding]] movement with bi-directional winding, ball-bearing [[rotor]]
  * [[Swiss lever escapement]]
  * [[Incabloc]] [[shock protection]]
  * [[Yoke winding system]]
  * Regulator system ETACHRON
  * [[Flat hairspring]], eccentric [[precision adjustment]] for the regulator

**Functions:**
  * Hours, minutes
  * [[Central seconds]] with [[hacking seconds]]
  * Date with [[quickset date feature]]
  * Weekday

**Data:**
  * 7¾ [[ligne]]s
  * Ø 17.2 mm, H 5,35 mm
  * 25 [[jewels]]
  * 28,800 A/h
  * [[Power reserve]] 38 h

**Production period:**
  * Since [[1971]]
</WRAP>

{{tag>Movements Automatic_movements ETA_calibres}}