The protagonist of the cover of issue number 215 of L’Orologio,
April cover, is the Rolex Sky-Dweller. The Sky-Dweller is a watch with an annual calendar and the reading of a second time zone, characterized
by an innovative system covered
by fourteen patents, including five new deposits,
in which the interface between the movement and the various functions is represented by the rotating bezel. It is based on a mechanical module which alone comprises over 60 components. Its heart consists of a double cam and levers that are connected, according to the function to be adjusted, to the different gear trains within the movement.fake rolex
The Sky-Dweller’s annual calendar automatically distinguishes the months from 30 to 31 days.
The only adjustment will have to be made once a year, on March 1st, both in leap years and in non-leap years. The system developed by Rolex is called Saros and is based on two gear ratios and four gears added to the instantaneous calendar usually used by the brand. Saros is a Greek term that since ancient times indicates an eighteen-year cycle at the end of which the sun, the earth and the moon find themselves in exactly the same position with respect to each other. best replica watches
Hence the inspiration for a mechanism designed around a planetary gear,
fixed at the center of the movement.
within a month,
a satellite wheel rotates integral with the date disc
by which it is
The wheel is
equipped with four teeth corresponding to the four months of 30 days,
which only at the end of one of these months receive an additional impulse
that allows the date window to make a double jump in a few thousandths of a second,
corresponding to two days,
to indicate the correct date.
Particular and original also the posting of the months that are
displayed on twelve windows placed in correspondence with the indexes,
each corresponding to the number of the month.
The current month is simply highlighted with a different color of the window
that will contrast with all the others. Below is the technical sheet. watch
Oyster Perpetual Sky-Dweller (Ref. 326935) – 18-karat Everose gold case;
Ring Command bi-directional rotating knurled bezel; screw-down crown with Twinlock system; sapphire crystal; screwed caseback with Rolex grooves. Self-winding mechanical movement, caliber 9001, Perpetual rotor on ball bearing, 28,800 vibrations / hour (4Hz), Parchrom blue paramegntic hairspring with Breguet curve, large balance wheel with variable inertia, high-precision adjustment by 4 gold Microstella nuts , through balance bridge, Paraflex high-performance shockproof device, 40 jewels, power reserve of approximately 72 hours, COSC chronometer certified.
Chocolate dial with soleil finish,
rose gold Arabic numeral indexes, luminescent rose gold baton hands, instant date with Cyclops lens at 3 with Saros system, central 24-hour rotating disc for the second time zone with hour hand adjustment fast and independent with fixed red triangular indicator, indication of the month through 12 windows corresponding to the indexes. Guaranteed waterproof up to a pressure of 10 atmospheres. Mississipiensis brown alligator strap with Everose gold folding Oysterclaps buckle.
Diameter: 42 mm; height, including lugs: 50 mm; width, including crown: 45 mm; thickness: 14.5 mm.