The fluted case back is hermetically screwed down with a special tool exclusive to Yellow Gold Rolex Oyster Perpetual Sky-Dweller Replica Watch. The winding crown, fitted with the patented Twinlock double waterproofness system, screws down securely against the case.The Sky-Dweller’s 42 mm Oyster case, guaranteed waterproof to a depth of 100 metres (330 feet), is a paragon of robustness, proportion and elegance. The characteristically shaped middle case is crafted from a solid block of 18 ct yellow, white or Everose gold, cast by Rolex in its own foundry. The waterproof Oyster case provides optimal protection for the Sky-Dweller’s high-precision movement. The crystal, with a Cyclops lens at 3 o’clock for easy reading of the date, is made of virtually scratchproof sapphire.
The oscillator, the true heart of the Rolex Oyster Perpetual Sky-Dweller Replica Watch, has a blue Parachrom hairspring patentedand manufactured by Rolex in an exclusive alloy of niobium and zirconium. Its design and quality manufacture ensure peerless precision and reliability.The Sky-Dweller is equipped with calibre 9001, a self-winding mechanical movement with a dual time zone display and annual calendar entirely developed and manufactured by Rolex. Like all Rolex Perpetual movements, the 9001 is a certified Swiss chronometer, a designation reserved for high-precision watches that have successfully passed the Swiss Official Chronometer Testing Institute (COSC) tests. Insensitive to magnetic fields, the Parachrom hairspring offers great stability when exposed to temperature variations and remains up to 10 times more precise in case of shocks than a traditional hairspring.
A classic watch for world travellers, the Rolex Sky-Dweller Replica Watch is a compelling timepiece of revolutionary design that blends to perfection iconic aesthetics, technological sophistication and ease of use. Function setting is straightforward and carried out via the fluted Ring Command bezel, by turning it to the corresponding position to adjust the local time, the reference time or the date, and then using the winding crown to perform the settings. This model with a strong Rolex identity combines a dual time zone display, as intuitive to read as it is simple to use, with a particularly reliable and innovative annual calendar that automatically displays the correct date throughout the year – needing only one adjustment on 1 March.