====== ETA 2671 ======
{{wst>image_cr|ETA|2671}}

The **ETA 2671** 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 2671 measures just 7¾ [[ligne]]s (17.2 mm) in diameter and is 4.8 mm tall. It includes hour, minute, and second hands and a date window. The slightly taller [[ETA 2678]] is similar but includes a day wheel.

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

The movement is used with ladies' watches. It is sold by [[TAG Heuer]] as their "Calibre 4".

===== Also Known As =====
  * [[Ball Watch Company|Ball]] RR2101, RR2701


<WRAP ud ud_mov>

**Description:**
  * [[Self-winding]] movement
  * [[Incabloc]] [[shock protection]]
  * [[Escapement]] Stone lever
  * [[Yoke winding system]]
  * [[Flat hairspring]], eccentric [[precision adjustment]] for the regulation

**Functions:**
  * [[Central seconds]]
  * Date with [[quickset date feature]]
  * [[Hacking seconds]]

**Data:**
  * 7¾ [[ligne]]s
  * D 17.2 mm, H 4.8 mm
  * 21-25 [[jewels]]
  * 28,800 A/h
  * Power reserve 38h

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

{{tag>Movements ETA_calibres}}