This model features a black dial and a two-colour Cerachrom bezel insert in green and black ceramic. Designed to show the time in two different time zones simultaneously during intercontinental flights, the GMT-Master II has come to be recognized for its robustness and versatile appearance.
MODEL CASE
JUBILEE bracelet, 40 mm,

Monobloc middle case, screw-down case back and winding crown
DIAMETER
40 mm
MATERIAL
Oystersteel
BEZEL.  
Bidirectional rotatable 24-hour graduated bezel. Two-colour green and black Cerachrom insert in ceramic, moulded numerals and graduations
WINDING CROWN
Screw-down, Triplock triple waterproofness system
CRYSTAL
Scratch-resistant sapphire, Cyclops lens over the date
WATER RESISTANCE
Waterproof to 100 metres / 330 feet
MOVEMENT
Perpetual, mechanical, self-winding, GMT function
CALIBRE
3285, Manufacture Rolex 
PRECISION
-2/+2 sec/day, after casing
FUNCTIONS
Centre hour, minute and seconds hands. 24-hour display. Second time zone with independent rapid-setting of the hour hand. Instantaneous date. 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 70 hours
BRACELET

Jubilee Bracelet 
BRACELET MATERIAL
Oystersteel
CLASP
Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link
DIAL
Black
DETAILS
Highly legible Chromalight display with long-lasting blue luminescence