While bidirectional rotating bezels may be quicker for wearers to turn to the appropriate spot, as a dive bezel it’s not the best option. If the bezel gets accidentally knocked, this could cause divers to miscalculate how long they have been underwater. Therefore, a unidirectional bezel is more prudent because accidental knocks to the bezel can only result in overestimating immersion time – it’s far preferable to start ascending to the surface earlier or spend longer than necessary at a decompression stop.Rolex began equipping the Submariner with unidirectional bezels starting with the Submariner Date ref. 16800, which was introduced around 1979. The no-date Submariner model received a unidirectional bezel with the introduction of the Submariner ref. 14060 in 1990.Like the previous generation, the new unidirectional bezels included aluminum bezel inserts. In 1983, Rolex introduced the first two-tone Submariner model in the form of the Submariner Date ref. 16803, which sported a yellow gold knurled bezel with a black or blue aluminum insert. To celebrate the 40th anniversary of the Submariner in 2003, Rolex introduced the stainless steel Submariner Date ref. 16610LV with a green bezel insert.In 2008, Rolex introduced the first Submariner models equipped with unidirectional bezels featuring Cerachrom inserts. Cerachrom is Rolex’s proprietary ceramic alloy that is not only resistant to scratching but also to fading. The 60-minute graduations are cut into the bezel and then the ceramic bezel insert is fully coated with either yellow gold (for yellow gold and two-tone models) or platinum (for white gold or steel models). The gold/platinum is then polished away from the ceramic surface until only the recessed numerals and markings are left with the metal filling.By 2012, Rolex had rolled out the Cerachrom bezels across all Submariner models and color options include black, blue, and green. A quick way to know the color of the bezel is to look at the letters in the reference number: LB (blue bezel), LN (black bezel), and LV (green bezel).
Part of the brand’s collection since 1945, the Rolex Datejust is the ultimate everyday luxury watch. While the model comes in a vast assortment of styles including different sizes, metals, bracelets, bezels, and dial designs, what remains constant across all Datejust watches is its time and date functionality. The hour, minute, and seconds hands are always placed at the center while the date window is always found at the 3 o’clock position. In true Rolex fashion, the Datejust watch is easy to use and operate but there are a few things to keep in mind when setting the time and date. Read on for our quick guide on how to set the date and time on a Rolex Datejust.Earlier models of the Rolex Datejust did not yet have the quickset date feature. A quickset date feature means that the date can be set independently from the timekeeping hands. Conversely, on a non-quickset Datejust, the minute and hour hands have to be advanced past midnight to change the numeral in the date window.Rolex introduced the quickset date function to the Datejust lineup in 1977 with the introduction of Caliber 3035 movement. So if your Datejust was made in 1977 or later and is powered by Caliber 3035 or subsequent movements (Cal. 3135, 3136, or 3235) then it has the quickset feature.Regardless of when a Datejust was produced, they all come equipped with a screw-down winding crown to ensure the watch’s water resistance. Therefore, a Rolex winding crown must be unscrewed first before any adjustments can be made.
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