====== Omega 1045 ======
**Calibre 1045** is an [[Omega]] version of the [[Lemania 5100]] [[automatic chronograph]] movement.

===== History =====
Most models of the [[Omega Speedmaster]] have been hand-winding. However, Omega has created a few [[Omega Speedmaster Automatic|automatic Speedmaster watches]] over the years. Many of the most sought-after models use Omega's Cal. 1045, a version of the famous [[Lemania 5100]] automatic chronograph movement.

The following Omega Speedmaster watches used Cal. 1045 

  * [[Omega Speedmaster Mark IV]] ST 176.0012 (1974-1977)
  * [[Omega Speedmaster Automatic|Omega Speedmaster "TV Dial"]] ST 176.0014 (1974-1977)
  * [[Omega Speedmaster Automatic|Omega Speedmaster "Tonneau"]] ST 176.0015/176.0016 (1974-1977)
  * [[Omega Speedmaster Mark V]] (1984)
  * [[Omega Speedmaster Automatic|Omega Speedmaster Automatic "Holy Grail"]] ST 376.0822 (1987)

One additional prototype, case number 176.0017, was created but not produced.

Cal. 1045 generally replaced [[Omega 1040|Cal. 1040]] (Omega's version of the [[Lemania 1341]]) in [[1974]]. It remained in production through about [[1988]], when the modular [[Omega 1140|Cal. 1140]] was introduced.

===== External Links =====
  * [[http://chronomaddox.com/c1045_in_detail.html|Speedmaster Automatic c. 1045 in Detail]]


{{tag>Omega_chronograph_calibres Automatic_chronograph_movements}}