Omega Aqua Terra Annual Calendar Co-Axial 44mm SS (34853)

34853 Omega Seamaster Aqua Terra Annual Calendar Co-Axial Chronometer 231 13 39 22 03 001 23113392203001, stainless steel on a strap with a matching stainless steel deployant buckle, automatic in-house Omega caliber 8601 movement with co-axial escapement, annual calendar which requires adjustment only in february, 55-hour power reserve, month and date windows at 3 o'clock, blue textured dial with dart indices, center sweep seconds hand, display back, water resistant to 150 meters, diameter: 44mm, thickness: 13.2mm. Like New with Box and Papers dated 1 / 2020.


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More about Omega Aqua Terra Annual Calendar Co-Axial 44mm SS

This is a stainless steel Omega Seamaster Aqua Terra Annual Calendar Co-Axial Chronometer It is on a strap with a stainless steel folding deployment clasp, and scratch resistant sapphire crystals with anti-reflective coatings. It has a fluted signed screw down winding crown, and an exhibition sapphire display screw down case back engraved with "ANNUAL CALENDAR – SEAMASTER – AQUAT TERRA – 150MM/500FT," and an Omega hallmark. The 42mm diameter solid two-body case, gently curved twisted lyre lugs, and flat angled bezel, are polished/brushed. It has a blue vertical striped textured dial with applied faceted luminous dart hour indices around a perimeter 60-minute/second scale with black Arabic numerals every five seconds. It has steel delta hands with a luminous triangle on the minute hand, and there is a steel center sweep seconds hand with a luminous arrow indicator and a wedge-shaped counterbalance. It includes steel rimmed back-to-back trapezoidal coffin-style double aperture month and date windows at the three o'clock position. There is a Certified Official Superlative Chronometer (COSC) rating, and it's water resistant to 150 meters/500 feet. It has a 60-hour power reserve at full winding, and the 13.2mm thick case, dial, and movement are all signed.

This Omega Seamaster Aqua Terra Annual Calendar Co-Axial Chronometer has a mechanical automatic self-winding Omega in-house caliber 8601 (based on the Omega caliber 8500) movement with a co-axial escapement. It's rhodium plated with fan-shaped sunray Cotes de Geneve embellishment, twin barrels, and a silicon hairspring. It's constructed with 39 jewels, a fine regulating system with a free-sprung monometallic balance with four screws, an anti-shock system, and the mechanism oscillates at a frequency of 25,200 vph (3.5 Hz).