Pre owned OMEGA CONSTELLATION MARINE CHONOMETER MEGAQUARTZ f2,4 MHz wristwatch for repair.

 The Movement: It’s a quartz movement with date. It was sent to a watchmaker for battery’s change and I was told that the hairspring is broken, so it has to be replaced.

The dial: It has a black background with white baton indexes for the hours and an outer raised plateau for the minute / seconds division. At six o’clock it has a date aperture. It presents a central seconds hand with matching white color hour and minute hands. It’s written “MARINE CHRONOMETER; CONSTELATION; MEGAQUARTZ; f2,4MHz; SWISS MADE; OMEGA’s logo; OMEGA”.

 The case: It has a used conditions large rectangular shape polished and brushed case, 14K gold bezel secured with four screws, Hallmarked under the 6 o’clock “OMEGA’s logo, QUARTZ”. The back case is secured by four screws.

Wristband: It’s a stainless steel polished and brushed integral bracelet with deploying clasp (it’s engraved R.S., which can be erased by polishing it).

Case Diameter: Is approximately 32.5mm (1.28”) x 44mm (1.73”) x 12.2mm (0.48”) of thickness and approx. 18cm (7”) overall internal length when the clasp is closed.

It also comes with a single paper document that is scanned at the pictures and a used conditions pink Omega box with a metallic central decoration that says “World Service Organization; Omega Watches”.

 … “Omega quartz 2400 “Marine Chronometer” 1974. The most accurate wristwatch in the world.

The Megaquartz 2400 remains to be unarguably the most accurate and most technically sophisticated wristwatch in the world. The result of a technological project carried out in collaboration with the Institute of Batelle Geneva, the first prototypes (cal. 1500) were presented at the Basel Fair of 1970. Its market launch dates from 1974 (cal. 1510).

Its unmatched precision of a second per month is nearly ten times higher than that of a common quartz watch. And this is thanks to its particular conception of a tiny disc-shaped resonator, content and sealed inside a capsule, which vibrates to the rhythm of almost unimaginable 2,359,296 pulses per second!. .”… Quoted from the “OMEGA; History of a Great Brand” printed in Switzerland by Omega s.a., 1993/2500/0493/3336109ES.