Rolex 'Batgirl' GMT-Master II (2023) 
Model No. 126710BLNR
Black Dial, Blue and Black Ceramic Bezel, Steel Jubilee Bracelet
New with box and papers.
 
24-Hour Rotatable Bezel - Innovative high-technology.
This model features a black dial and a two-colour Cerachrom bezel insert in blue and black ceramic. In addition to conventional hour, minute and seconds hands, the GMT-Master II features an arrow-tipped hand, which circles the dial once every 24 hours, as well as a bidirectional rotatable 24-hour graduated bezel.
The distinctively coloured 24-hour hand displays the “home” reference time in a first time zone which can be read on the graduations on the bezel. The traveller’s local time is easily set by “jumping” from hour to hour, thanks to an ingenious mechanism operated via the winding crown: the hour hand can be adjusted forwards or backwards independently of the minute and seconds hands. This allows travellers to adapt to their new time zone without affecting the precision of their timekeeping.
 
Black dial - High legibility in all circumstances
Like all Rolex Professional watches, the GMT-Master II offers exceptional legibility in all circumstances, and especially in the dark, thanks to its Chromalight display. The broad hands and hour markers in simple shapes – triangles, circles, rectangles – are filled with a luminescent material emitting a long-lasting glow.
 
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