Case in white gold, 39 mm in diameter, about 11 mm thick, 50 metres water resistance, solid caseback

Self-winding mechanical movement made in-house by Rolex, 28,800 vibrations per hour (4 Hertz), 48 hours power reserve

Hands and hour appliques in pink Everose gold

Alligator leather strap with pink gold pin buckle

Subdial for second time zone, minutes coordinated with main minutes hand, hours adjusted in one-hour intervals using the crown

Rolex Cellini Dual Time, reference 50525, price €18,050

Day/night indicator for second time zone

The 2016 version of the Cellini Dual Time by Rolex has a brown guilloché dial, and a subdial at 6 o’clock showing the time for a second time-zone. (Of course, you can still purchase the Cellini Dual Time in its previous silver-colour and black dial versions). Though the subdial has hour and minute hands, it can only display the whole-hour time zones, because the minute hand is coordinated with the main minute hand at the centre of the watch. When you set the time using the crown, both minute hands move together. Another position of the crown is used to change the hour hand of the second time zone, in one-hour intervals. It’s a simple and practical system, and in my opinion this sort of second time zone indicator is more intuitively comprehensible than the 24-hour system used in many watches.

In the Cellini Dual Time, there is also a day/night indicator for the second time zone, a small window with a crescent moon on a dark background, or the sun on a white background.

The guilloché on the subdial is like a smaller version of the main dial. Hands are in pink gold; the strap is in brown alligator leather with a gold pin buckle. The watch has a five-year guarantee.

The watch has a 39 mm case in Everose pink gold, approximately 11 mm thick, slightly domed caseback, and a water resistance of 50 metres. Inside the case is a self-winding mechanical movement designed and built by Rolex, with a Parachrom antimagnetic hairspring, a balance running at 28,800 vibrations per hour (4 Hertz), and 48 hours power reserve. The watch is provided with Rolex’s Superlative Chronometer certification, which offers a precision of +2/-2 seconds deviation per day, as well as other tests on power reserve, precision in different positions, and water resistance. Each movement is also tested for precision by COSC.

Price and reference

The Rolex Cellini Dual Time, reference 50525, costs €18,050.