The Oyster Perpetual Sky-Dweller in Oystersteel and white gold with a bright black dial and a Jubilee bracelet.

A fixed inverted red triangle on the dial points to the chosen reference time – the time at home or at the traveller’s usual workplace – on the off-centre 24-hour disc. At a glance, this 24-hour display clearly distinguishes daytime hours from night-time hours in the other time zone. A deep red rectangle in one of the 12 windows around the dial indicates the current month, a striking characteristic of the Saros annual calendar. This ingenious mechanism simplifies life for the wearer of the watch, who no longer needs to think about adjusting the date at the end of a 30-day month. The annual calendar displays the correct date through the year. Only one adjustment is needed – on 1 March (February having only 28 or 29 days). The date is connected to local time and automatically changes according to the traveller’s local time zone.

The Rolex fluted bezel is a mark of distinction. Originally, the fluting of the Oyster bezel had a functional purpose: it served to screw the bezel onto the case, helping to ensure the waterproofness of the watch. It was therefore identical to the fluting on the case back, which was also screwed onto the case for waterproofness, using specific Rolex tools. Over time, the fluting became an aesthetic element, a genuine Rolex signature feature. Today the fluted bezel is a mark of distinction, always in gold. The Sky-Dweller is equipped with a mechanism of interaction between the rotatable bezel, the winding crown and the movement: the Ring Command system, which allows the user to select the watch's functions one-by-one and to set them easily, quickly and securely.

Gold is coveted for its lustre and nobility. Steel reinforces strength and reliability. Together, they harmoniously combine the best of their properties. A true Rolex signature, Rolesor has featured on Rolex models since the early 1930s, and was trademarked as a name in 1933. It is one of the prominent pillars of the Oyster collection.

Supple and comfortable, this five-piece link metal bracelet was specially created for the Oyster Perpetual Datejust, which was launched in 1945. The Jubilee bracelet on these watches is equipped with a folding Oysterclasp and features the Easylink comfort extension link, developed by Rolex, which allows the wearer to easily adjust the bracelet length by approximately 5 mm. The bracelet also includes patented ceramic inserts – designed by the brand – inside the links to enhance its flexibility on the wrist and its longevity.

The Cyclops lens is one of the most distinctive Rolex features, and one of the most recognizable. Named after the one-eyed giant of Greek mythology, the Cyclops lens magnifies the watch’s emblematic date display for easy reading. Behind the Cyclops, as with every feature of a Rolex timepiece, lies a history of invention, research and development, and the endless search for perfection.

The new-generation Sky-Dweller is equipped with calibre 9002, unveiled this year. A distillation of technology, this self-winding mechanical movement – a derivation of calibre 9001, one of the most complex movements designed by Rolex and which had driven the model since its launch in 2012 – delivers outstanding performance in terms of precision, power reserve, convenience and reliability.

Dial

• Dial : Bright black
• Details : Highly legible Chromalight display with long-lasting blue luminescence

Case

• Case : Oyster, 42 mm, Oystersteel and white gold
• Oyster architecture : Monobloc middle case, screw-down case back and winding crown
• Diameter : 42 mm
• Material : White Rolesor - combination of Oystersteel and white gold
• Bezel : Fluted, bidirectional rotatable Rolex Ring Command
• Winding crown : Screw-down, Twinlock double waterproofness system
• Crystal : Scratch-resistant sapphire, Cyclops lens over the date
• Water resistance : Waterproof to 100 metres / 330 feet

Movement

• Movement : Perpetual, mechanical, self-winding, dual time zones, annual calendar
• Calibre : 9002, manufacture Rolex
• Precision : -2/+2 sec/day, after casing
• Certification : Superlative Chronometer (COSC + Rolex certification after casing)
• Functions : Centre hour, minute and seconds hands. 24-hour display on off-centre disc. Second time zone. Instantaneous annual calendar at 3 o'clock and rapid-setting of the date. Month display via 12 apertures around the circumference of the dial. Stop-seconds for precise time setting
• Oscillator : Paramagnetic blue Parachrom hairspring. High-performance Paraflex shock absorbers
• Winding : Bidirectional self-winding via Perpetual rotor
• Power reserve : Approximately 72 hours

Bracelet

• Bracelet : Jubilee, five-piece links
• Material : Oystersteel
• Clasp : Folding Oysterclasp with Easylink 5 mm comfort extension link