Speedmaster Moonwatch Co-Axial Chronograph

Model #: 311.

Midsize Watch | Automatic Movement

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OUR PRICE: £9,405

RRP: £10,450


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Warranty TheWatchSource 5 Year Warranty
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Watch Specifications

Brand Omega
Series Speedmaster Moonwatch Co-Axial Chronograph
Model Number 311.
Size Midsize
Case Material Ceramic
Dial Colour White
Bracelet/Strap Alligator/Crocodile Leather White
Clasp Deployant Buckle
Movement Automatic - Chronometer
Bezel Fixed
Screw-down Crown No
Crystal Anti-Reflective Scratch Resistant Sapphire
Case Back Transparent
Water Resistance 50m/167ft
Diameter 44.25mm
Case Thickness 16.50mm

Watch Description

Brushed/Satin finished white ceramic case with polished finished beveled corners.

Polished white ceramic crown with the omega logo engraved.

Polished white ceramic chronograph buttons.

Polished white ceramic bezel with an engraved & matt chromium nitride filled tachymeter scale.


High gloss white ceramic main dial & sub-dials.

Applied polished white gold polished index hour markers with luminescent fill.

Printed minute/seconds & fractions of a second track.

Polished white gold hands with luminescent fill.

Chronograph Stopwatch functions:

Large red tipped central seconds hand counter.

Minute & hour counters are combined into a single sub-dial located at the 3 o'clock position.

Small continuous running seconds hand sub-dial located at the 9 o'clock position.

Date window displayed at the 6 o'clock position.

Domed sapphire crystal on front & back.

Case back engraved with "WHITE SIDE OF THE MOON - Si 14 -50m/167ft - ZrO2"

Polished white zirconium oxide ceramic buckle top with stainless steel deployant buckle mechanism.


Omega caliber 9300, beats at 28,800 vph, contains 54 Jewels & has an approximate power reserve of 60 hours - thanks to its twin barrels mounted in series.

Column-Wheel Chronograph - column wheel is visible from the transparent case back.

The movement features Omega's "Si 14" silicon balance spring, which contributes to the movements outstanding resistance to shock and to environmental disturbances and thus, to the watch’s chronometric performance.

The movement also features the now-standard Co-Axial Escapement which contributes to greater precision, stability & durability. The Co-Axial escapement has less friction & reduces the necessity of lubrication thus reducing the time required between servicing.

The combination of the SI 14 balance spring & the Co-Axial escapement makes for an extremely reliable & stable movement.

The rotor & visible bridges are decorated with a unique "arabesque" wave design finish.

This Watch has an alternate part number:

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