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watch is equipped with the new Rolex Cal­iber 3235, a self-wind­ing move­ment boast­ing a num­ber of in­no­va­tive tech­ni­cal de­tails, some of them patented. is rep­re­sents the first time Rolex has em­ployed this re­cently in­tro­duced, tech­ni­cally su­pe­rior move­ment in one of its “Pro­fes­sional grade” time­pieces. Like all new Rolex watches, the Sead­weller car­ries the Su­perla­tive Chronome­ter cer­ti­fi­ca­tion.

Like its most re­cent pre­de­ces­sors, the new Sea-dweller is wa­ter re­sis­tant to a depth of 1,220 me­ters (4,000 feet). Its 60-minute grad­u­ated, uni­di­rec­tional, ro­tat­ing divers’ bezel is fit­ted with a patented black Cer­achrom bezel in­sert man­u­fac­tured by Rolex in a vir­tu­ally scratch­proof ce­ramic whose color is un­af­fected by ul­tra­vi­o­let rays. e bezel’s grad­u­a­tions are Pvd-coated with a thin layer of plat­inum. e dial’s large hour mark­ers are filled with Chro­ma­light, a Rolex-de­vel­oped lu­mi­nes­cent ma­te­rial that emits a long-last­ing blue glow in low­light con­di­tions.

e case, with Rolex’s iconic Oys­ter con­struc­tion, has a mid­dle piece crafted from a solid block of cor­ro­sion-re­sis­tant 904L steel; the fluted case­back is her-

— Rolex cel­e­brates the half-cen­tury mark for its ex­treme divers’ watch, the Oys­ter Per­pet­ual Sead­weller, by launch­ing an all-new model, with a larger case and mod­ern cal­iber.

e new Rolex Sea-dweller is an up­dated ver­sion of the orig­i­nal model from 1967. e orig­i­nal Rolex Sea-dweller, cre­ated in 1967, was de­signed for pro­fes­sional deep-sea divers of that era. Among its many no­table fea­tures was a he­lium-es­cape valve, patented by Rolex that same year, which reg­u­lates the air pres­sure ac­cu­mu­lated in­side its case dur­ing the de­com­pres­sion phases of deep-wa­ter sat­u­ra­tion dives.

e case of the new Sead­weller also comes with the he­lium-es­cape valve and is 43 mm in di­am­e­ter — 3 mm larger than its 40-mm pre­de­ces­sor. e scratchre­sis­tant sap­phire crys­tal over the deep black dial is equipped, for the first time on this model, with a Cy­clops lens over the date win­dow at 3 o’clock, en­hanc­ing its leg­i­bil­ity. e text “Sead­weller” ap­pears on the dial in red, echo­ing the look of the orig­i­nal 1967 model. Fi­nally, the met­i­cally screwed down with a spe­cial tool that al­lows only Rolex watch­mak­ers to ac­cess the move­ment. e screw-down crown, pro­tected by a crown guard in­te­grated into the case mid­dle, uses Rolex’s Triplock triple wa­ter­proof­ness sys­tem, which en­sures se­cure wa­ter­proof­ness for the watch’s in­te­rior in the same man­ner as a sub­ma­rine’s hatch.

The new-gen­er­a­tion move­ment se­cured in­side this high­tech case is Cal­iber 3235, en­tirely de­vel­oped and man­u­fac­tured in-house by Rolex to achieve an elite level of pre­ci­sion, power reserves and shock re­sis­tance. It boasts 14 patents, in­clud­ing one for its Chronergy es­cape­ment, made from mag­netic-re­sis­tant nickel phos­pho­rus. The os­cil­la­tor, which beats at a fre­quency of 28,800 vph, fea­tures a blue Parachrom hair­spring (an­other Rolex patent), which Rolex says is up to 10 times more pre­cise than a tra­di­tional hair­spring when sub­jected to shocks. Cal­iber 3235’s so-called “Per­pet­ual” ro­tor winds the main­spring in both di­rec­tions, amass­ing a power re­serve of ap­prox­i­mately 70 hours thanks to the move­ment’s new bar­rel ar­chi­tec­ture and the Chronen­ergy es­cape­ment’s su­pe­rior ef­fi­ciency.

e new Sea-dweller’s solid-link Oys­ter bracelet, in 904L steel, is fit­ted with an Oys­ter­lock safety clasp that pre­vents ac­ci­den­tal open­ing. e bracelet also fea­tures a dou­ble-ex­ten­sion sys­tem that al­lows ad­just­ments to be made with­out the use of tools, al­low­ing the watch to be worn com­fort­ably over a div­ing suit up to 7 mm thick. Rolex’s Fli­plock ex­ten­sion link ex­tends the bracelet by 26 mm, while its Glide­lock sys­tem al­lows fine ad­just­ment of the bracelet length in 2-mm in­cre­ments, for a to­tal of ap­prox­i­mately 20 mm.

e re­tail price of the Rolex Oys­ter Per­pet­ual Sea-dweller is $11,350.

Rolex was not only plumb­ing the depths; it was also cast­ing its gaze heav­en­ward at the moon and stars with the new­est model in its el­e­gantly ap­pointed Cellini col­lec­tion, the Rolex Cellini Moon­phase — a watch that fea­tures a patented, as­tro­nom­i­cal moon-phase func­tion, a me­te­orite-ap­pliqué moon, and an Everose gold case.

e 39-mm case of the Rolex Cellini Moon­phase is made from Everose gold, a pro­pri­etary al­loy that mixes gold, cop­per, and a touch of plat­inum, and sports a pol­ished fin­ish. It fea­tures the dou­ble-domed, fluted bezel that is a hall­mark of the Cellini col­lec­tion, a domed, solid screw-down case­back; a domed sap­phire crys­tal with non­re­flec­tive coat­ing on both sides; and a screw-down crown for a wa­ter re­sis­tance of 60 me­ters. Its white lac­quered dial — swept over by rose-gold hands and punc­tu­ated by rose-gold hour ap­pliqués — opens up at the 6 o’clock po­si­tion to re­veal a blue enam­eled disk dis­play­ing the full moon (rep­re­sented visu­ally by a round frag­ment of rhodium-plated me­te­orite ap­plied to the disk), the new moon (rep­re­sented by a thin, sil­ver ring), and a field of stars. e pointer at the 12 o’clock po­si­tion on this sub­dial points to the cor­rect moon-phase as the two moons ro­tate through the lu­nar cy­cle.

Along with the phase of the moon (and the time), this watch dis­plays the date with a cres­cent­tipped blued hand point­ing to a 1-through-31 scale printed around the dial’s cir­cum­fer­ence. e move­ment driv­ing all of these func­tions is Rolex’s man­u­fac­ture Cal­iber 3195, with a patented mo­d­ule for the moon­phase in­di­ca­tion, which is engineered to be as­tro­nom­i­cally ac­cu­rate for 122 years. e self­wind­ing move­ment has 31 jew­els, os­cil­lates at a fre­quency of 28,800 vph, and car­ries ap­prox­i­mately 48 hours of power re­serve when fully wound. It fea­tures nu­mer­ous Rolex-de­vel­oped tech­ni­cal in­no­va­tions, in­clud­ing a para­m­ag­netic blue Parachrom hair­spring with Rolex over­coil and a high-per­for­mance Paraflex shock-ab­sorp­tion sys­tem.

e Rolex Cellini Moon­phase is the first Rolex watch with a moon-phase pro­duced since the 1950s. It is mounted on a brown al­li­ga­tor leather strap, with Rolex’s ad­justable fold­ing “Crown­clasp” in 18k-everose gold to match the case. Like all Rolex watches since 2015, it is cov­ered by the brand’s Su­perla­tive Chronome­ter cer­ti­fi­ca­tion, in­di­cat­ing that the fully as­sem­bled watch has passed a bat­tery of tests of its pre­ci­sion, power re­serve, wa­ter re­sis­tance, and self-wind­ing ef­fi­ciency. e fi­nal cased watch is guar­an­teed an ac­cu­racy of -2/+2 sec­onds per day, a rate more than twice what is re­quired of a Cosc-cer­ti­fied chronome­ter. e watch is priced at $26,750 and car­ries an in­ter­na­tional five-year guar­an­tee.

Rolex Oys­ter Per­pet­ual Sea-dweller Ref. 126600

Rolex Cellini Moon­phase Ref. 50535

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