The Oyster case was an innovation of its time when it was developed by Rolex in 1926. It ushered in a brand new era of durable, everyday watches that could be worn during almost any activity without damaging the internal movement. The Submariner takes the design of the Oyster case one step further and increased its waterproofness up to 300 meters/1,000 feet.The ref. 16613 features a standard 40mm case in highly corrosion-resistant 904L stainless steel. An 18 karat yellow gold screw-down crown and unidirectional bezel accompany the case, giving it a desirable two-tone design. The dial and bezel set are most commonly available in either black or blue, with some examples of the gem-set “Serti” dial (either champagne or silver in color and set with diamonds and blue sapphires) also available on the secondary market. Depending on the year produced, the ref. 16613 also features either a holes or no holes case and either Tritium or LumiNova used for the luminescence on the dial and hands.Regardless of the year of production, all two-tone Rolex 16613 Submariner watches are powered by Rolex’s trusty Caliber 3135 automatic movement. The 31-jewel movement beats at a rate of 28,800bph and includes a date complication, a 48-hour power reserve, automatic winding technology, and a sophisticated Breguet overcoil balance-spring. The movement has been a fixture in many Rolex wristwatches for more than three decades, and for a good reason. The Cal. 3135 has proven itself to be an accurate and robust movement, which can deliver decades of reliable performance if properly maintained.
Date Sizes While the first sizes of the Datejust and the Date were 36mm and 34mm (respectively), Rolex did add more size options to both collections over the years. For instance, somewhat puzzlingly, Rolex has in the past produced the Lady-Datejust and the ladies’ Date with 26mm cases, and the mid-size Datejust and mid-size Date with 31mm case sizes. However, perhaps for greater clarity between the two models, Rolex has since discontinued all of the smaller Date versions and currently only makes the Date 34. Additionally, Rolex has also ceased making the Lady-Datejust 26, replacing it with the Lady-Datejust 28. Furthermore, over the course of the last decade, Rolex has also added larger options for the Datejust.Rolex Datejust SizesThe Rolex Datejust has always offered far more metal choices and different style options compared to the Rolex Date. Although there are some vintage and discontinued Date 34 models in solid gold and two-tone steel and gold, Rolex has now simplified the choices to just two: full stainless steel or stainless steel with a white gold fluted bezel, both of which have 34mm cases and are fitted with Oyster bracelets.
However, the dials of the gold Sub were not the standard black dials of their stainless steel counterparts.A few years later, around 1971, Rolex offered another colorway of the yellow gold Submariner featuring a bright blue bezel and dial. The yellow gold Submariners in blue also has the same “nipple dial” design. Particularly intriguing with the blue gold Submariner 1680/8 models is how the dials have transformed into different colors over time including lighter blues, vibrant purples, and rich reddish brown (also known as “tropical dials” in vintage Rolex terminology). Comparing the Rolex Submariner to the GMT-Master II.Two watches, perhaps the two most well-known in Rolex’s sports watch lineup, have amazing similarities, and one can be forgiven for confusing them at a distance. These two watches are, of course, the Submariner dive watch (ref. 116610) and the GMT-Master II (we’ll call it the GMT for short, but we’re talking about the current ref. 116710).The Submariner GMT Master Comparison .The individual histories of the Submariner and the GMT are well documented elsewhere, so let’s compare and contrast the two current models.First, the similarities. The Submariner and the GMT-Master II are luxury watches. Both watches are currently housed in the 40mm diameter so-called “super case” with a ceramic or Cerachrom bezel insert. This case, done in 904L stainless steel, debuted in 2007 with the GMT (the Submariner received the new case a year later). There are minute differences in the two cases, but you need to set them side by side and look very closely to see them.Both watches buckle to your wrist with the current Oyster bracelet.
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