OMEGA Constellation - Marine Chronometer
very rare, only 7000 Examples worldwide
This Megaquartz 2400 (f 2,4 MHz) is regarded as the world’s most technically advanced wristwatch.
It is precise to less than one second per month, which makes it about ten times more accurate than a ordinary quartz watch. This precision stems from a specially-designed tiny disc-shaped resonator, which is sealed in a capsule and vibrates to the amazing rate of 2’359’296 times a second.
The title of “world’s most accurate wristwatch” was bestowed on the watch after 63 days of rigorous testing, resulting in a mean variation rate of no more than 2/1000ths of a second per day or 0,73 seconds per year.Moreover, the watch is equipped with a time zone and seconds adjustment device. This allows for independent hour adjustment, thus not affecting the minutes or seconds. With the seconds corrector in the band the watch can be set to the exact second according to the official time signal.
The Megaquartz 2400 was developed in cooperation with the Battelle Institute of Geneva.The first prototype, using caliber 1510, was presented at the 1970 Basel Fair. The watch was launched two years later in its standard version with caliber 1510, in 1974 as a marine chronometer, with caliber 1511.Caliber 1516 the last and the best version was the successor to the caliber 1511. It was produced in only 7000 examples.
Dead centre seconds, water-resistant, stainless steel gentleman’s wristwatch with date, independent hour adjustment and 14K gold bezel and an integral Omega bracelet with deployent clasp.Two body, polished and brushed, 14K gold bezel secured with four screws, corrector on the band for the seconds, hooded lugs, plate with movement number on inclined side at 6 o’clock, sapphire crystal.Black, white baton indexes, outer minute/seconds divisions on a raised plateau, date apenture. Luminous white “baton” hands with luminous inset, white center seconds hand.
This watch has been fully restored by Omega and is the best one I've ever seen.