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. 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.

Gender	Man
Brand	Rolex
Model No.	336934
Movement	Perpetual, mechanical, self-winding, dual time zones, annual calendar
Calibre	9002, manufacture Rolex
Power reserve	Approximately 72 hours
Precision	-2/+2 sec/day, after casing
Case diameter	42 mm
Dial	Bright blue-Highly legible Chromalight display with long-lasting blue luminescence
Bezel	Fluted, bidirectional rotatable Rolex Ring Command
Glass Material	Scratch-resistant sapphire, Cyclops lens over the date
Case Material	Oyster, 42 mm, Oystersteel and white gold
Water Resistance	Waterproof to 100 metres / 330 feet
Bracelet material	Oystersteel - Oyster, three-piece solid links
Clasp	Folding Oysterclasp with Easylink 5 mm comfort extension link
Winding Crown	Screw-down, Twinlock double waterproofness system
Winding	Bidirectional self-winding via Perpetual rotor
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
Oyster Architecture	Monobloc middle case, screw-down case back and winding crown
Condition	Brand New In Box (BNIB)
What's Inside Box	1x Rolex Skydweller - 336934 Blue Dial Bright Blue Oyster, three-piece solid links 1x Official Rolex Certificate Card 1x Rolex Manual Book 1x Rolex Hang Tag 1x Watch Box