GMT-Master II, Blue and Black
A steel GMT-Master II with a two-colour blue and black ceramic bezel.
Rolex made the first GMT-Master in 1955 for airline pilots. The 24-hour hand and rotating bezel let the wearer follow a second time zone.
The bezel is a single piece of ceramic in two colours, blue for the night hours and black for the day. This version is on an Oyster bracelet.
Calibre 3285 has an independent hour hand, so the local time can be changed without stopping the watch.
- Reference
- 126710BLNR
- Introduced
- 1955 (GMT-Master)
- Case
- 40 mm, Oystersteel
- Movement
- Calibre 3285, self-winding
- Power reserve
- About 70 hours
- Water resistance
- 100 m
- Functions
- Hours, minutes, seconds, date, second time zone
- Notable
- Two-colour Cerachrom bezel, 24-hour hand



