Sky-Dweller Oyster, 42 mm, Oystersteel and white gold Reference m336934-0004

The Oyster Perpetual Sky-Dweller in Oystersteel and white gold with an intense white dial and an Oyster bracelet.

Intense white dial
A striking characteristic
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.

Model 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
Perpetual, mechanical, self-winding, dual time zones, annual calendar

Calibre
9002, manufacture Rolex

Precision
-2/+2 sec/day, 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
Oyster, three-piece solid links

Material
Oystersteel

Clasp
Folding Oysterclasp with Easylink 5 mm comfort extension link