Omega Caliber 8520 LAdies Automatic Watch Movement

Omega Caliber 8520

Omega Caliber 8520 LAdies Automatic Watch Movement

Brand Omega
Caliber Number 8520
In-House Yes
Movement Type Automatic
Jewels 28
Power Reserve 50 hours
Vibrations Per Hour 25,200bph
Hairspring Silicon Si14
Shock System Nivachoc
Features Hours, minutes, date at 3:00
Country of Manufacture Switzerland
Known Models 37.5mm Planet Ocean, Ladies Constellation, 34mm Aqua Terra (add yours in the comments below…)

The Omega caliber 8520 is an in-house automatic movement found in smaller ladies and mid-size Omega watches.

In Omega’s own words:

Self-winding movement with Co-Axial Escapement for greater precision, stability and durability. Free sprung-balance system with silicon balance-spring. Automatic winding in both directions to reduce winding time. Rhodium plated finish with exclusive Geneva waves in arabesque.

Omega Caliber 8520 Coaxial

Watches with this movement:

At the time of this post, Omega has 164 models with the caliber 8520. The image above is an 8250 example from a ladies 31mm Constellation watch. Some other models include:

  • Aqua Terra (30mm)
  • Aqua Terra (34mm)
  • Constellation (27mm)
  • DeVille Ladymatic (34mm)
  • Planet Ocean (37.5mm)

Video Manual:

Additional Resources:

Seagull Caliber St19

Join our mission to spread movement awareness!

Members Online

  • admin Watchneverdie Pav

Recent Forum Posts

Trending Comments


Sellita Caliber SW330-2

Hi Martin, no "tricking" going on here lol. Sellita lists 3 grades for the caliber…


Miyota Caliber 8215

@Keith Johnson, don't you worry my good man, because these have a genuine Miyota 8215…


Seiko Caliber 7S26

There reallt ís a "definite" and "safe" answer to this question - that'll serve for…


Sellita Caliber SW330-2

Glad you got it all sorted out. Yes, it can be quite confusing sometimes. Really…


Sellita Caliber SW330-2

Hahaha, your right I was looking at the eBay listing, sorry for the accusation that…


Would love your thoughts, please comment.x