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To give you an idea of the overwhelming variety in the current Omega watch world, I have put together a guideline. Please note that the following list is not intended to be exhaustive or used as purchase advice.
I merely wish to shed light on Omega’s very special nomenclature as it applies to the brand’s modern watches.
Omega Seamaster 300
Using numbered references at Omega
For identification, each watch model features a so-called Product Information Code (“PIC” for short), which consists of 14 digits. In the following, I refer to this as AAA.BB.CC.DD.EE.FF. The equivalent descriptions can be converted using the “codification table” and the “collection code” (see below).
The first three digits of the PIC (the “AAA”) represent the collection: “311,” for example, stands for the classic Speedmaster family.
The following two numbers of the PIC (the “BB”) relate to the case and the strap/bracelet material; “13,” for example, means that the watch is housed in a stainless steel case and equipped with a nonmetal strap.
“CC” defines the diameter, rounded up to the next digit.
“DD,” the PIC digits in fourth position, tell us in a more detailed manner whether it is a quartz or mechanical caliber. The first D provides information on the nature of the movement: whether it is a chronograph, a co-axial chronograph, or even chronometer certificated.
The second digit of the D duo refers to the number of complications, with “complication” being considered an additional indication beyond hour, minute, second, and date.
“EE” denotes the type of the dial: for instance, “01” is a simple black face, whereas “63” would be a brown dial set with precious stones.
The last two digits (“FF”) refer to the sequence number of the production.
According to this system, the long number tells us that, for example, Omega’s Speedmaster Grey Side of the Moon co-axial chronograph (311.93.44.51.99.001), a grey ceramic watch on a leather strap, is part of the Speedmaster family (311).
The number 93 explains that the watch features a case not further detailed and a non-metal strap. The “44” defines the diameter, whereas “51” informs us that it is a mechanical co-axial chronograph with one additional complication.
The numeral “99” relates to the dial material, a “special material,” while “001” is the sequence number.
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