Lastly, both the 16613 and the 116613 are fitted with stainless steel and 18k yellow gold Oyster bracelets. Depending on the year released, the ref. 16613 has either solid or hollow end-links, either a stamped or link-style fold-out extension system, and either a gold-through or an all-steel clasp. Collectors have different preferences on 16613 bracelet styles, making it a fun watch to collect.The ref. 116613 offers a more substantial hold on the wrist than its 5-digit predecessor and features solid gold center links, solid end-links, and a machined Oysterlock clasp with an innovative Glidelock extension system. The solid construction of the bracelet balances the Super Case nicely on the wrist for a supremely comfortable hold, even over wetsuits.While the ref. 116613 is noticeably more modern in appearance, it still boasts many similarities to the ref. 16613 in the form of a versatile two-tone finish, similar dial and bezel color options, the same water-resistance of up to 1,000 feet (300 meters), and an Oyster bracelet that wears comfortably and allows for tool-free adjustment over wetsuits. When collecting, it ultimately comes down to preference; do you prefer a classic or a contemporary dive watch?The Rolex Sea-Dweller Deepsea is the most robust and over-engineered dive watch in Rolex’s current lineup. While the regular Sea-Dweller is water-resistant to an insane depth of 4,000 feet, the Deepsea has an absolutely abyssal depth rating of 12,800 feet, which is more than 100 times further below the surface of the ocean than any human could physically survive.Although the case of the standard Rolex Sea-Dweller is not all that different from that of a Submariner, the Deepsea has a re-designed case architecture that allows it to stand up to the crushing pressures found at 12,800 feet below sea-level. As a result of its more rugged and highly specialized build, the Deepsea is among the largest Rolex watches currently in production, with a case diameter of 44mm, and an overall thickness of just under 18mm.
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).
The case is fully made of black ceramic, it is a pioneering work Omega made in their Planet Ocean. The case is brushed, while the edge of lugs is polished, seeing the side, the case has a graceful arc shape. The bezel uses high grade black ceramic with silver engravings. The case back is see-through sapphire crystal, VS factory developed Omega-patented Naiad Lock system, you only need to rotate the case back a bit to lock it perfectly. Check the case back, there are unique engravings on three lugs.The dial is black, which is made of real ceramic Zr02, this is the high gloss black dial that is exact 1:1 imitation of original. The dial has a correct hand stack, hour markers and hands have silver edge and are applied with white lume material, the dial has two different lume colors, hour markers and hour hand will emit strong blue light, minute hand will emit strong green light in the dark. On the outer dial, there are 24-hour gmt markers, GMT hand in the center has an orange triangle mark that is also filled with luminescence. This Deep Black Planet Ocean is a GMT watch, if Omega makes a full ceramic Planet Ocean without GMT function, that will be very popular.
