Omega Speedmaster Heritage 57 black sandwich dial review Master Chronometer Handwound 9906 Movement
Here's my review of the Omega Speedmaster Heritage 57 black sandwich dial with METAS Certified 9906 Movement. I go over the bracelet and Omega Golden Brown straps on Deployant clasp that you can typically get online or at a boutique.
Model Reference # 332.10.41.51.01.001
Here is that Time and Tide video I referenced on the Sandwich dial. Very informative!
• Explaining the Omega Speedmaster ’57’s san...
For METAS Certification information:
METAS Master Chronometer certification is comprehensive and covers the main functional characteristics of a watch including precision, resistance to magnetic fields, waterproofness and power reserve. Its standards are incredibly high, starting with precision. In order to qualify, a watch must be able to function within a 5-second range of variation each day (0 +5), that is to say 5 seconds less than the Official Swiss Chronometer Testing Institute (COSC) (-4 +6) carried out on a single movement and a second less than Omega's internal standard, which is applied to the brand's models with a Manufacture Calibre (-2 +4).
The certification also guarantees the timekeeping accuracy of a watch subjected to magnetic fields of 15,000 gauss. Finally, it guarantees that the waterproof capability claimed by the manufacturer conforms with the International Organization for Standardization (ISO) standard 22810:2010, as does the power reserve of each Master Chronometer watch. It should also be noted that two prerequisites are necessary before the certification can be obtained: manufacturing must conform with the criteria of Swiss Made, and the movement must be certified by the Official Swiss Chronometer Testing Institute (COSC).
CRITERIA AND TESTS FOR METAS CERTIFICATION
All the tests and prerequisites leading to Master Chronometer certification, which the most Omega Watch movements have achieved, are summarised below:
Swiss Made
Certification by the Official Swiss Chronometer Testing Institute (COSC)
Precision at two temperatures, in six different positions and at two different levels of power reserve: 100% and 33%
Smooth functioning when exposed to a magnetic field of 15,000 gauss and precision following exposure
Waterproof to 200 m (660 ft) in accordance with ISO standard 22810:2010
60-hour power reserve
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