Side by side

Differs

Rolex Air‑King126900

Rolex GMT‑Master II126710BLNR

Shape: Not known; Round; Round
Diameter: 40 mm; 40 mm; 40 mm
Thickness: 15.02 mm; Not known; Not known
Lug width (differs): 20 mm; 21 mm; 20 mm
Material (differs): Stainless steel; Oystersteel; Oystersteel
Bezel (differs): Bidirectional rotating; Smooth; Bidirectional rotating
Bezel insert: Not known; Not known; Cerachrom ceramic, Blue/black
Caseback: Screw-down; Screw-down; Screw-down
Crystal (differs): Sapphire, Domed, Anti-reflective on both sides; Sapphire; Sapphire
Cyclops (differs): Not known; No; Yes
Crown (differs): Push-pull; Screw-down; Screw-down
Water resistance: 100 m; 100 m; 100 m

Calibre (differs): Breitling Gallet 23; Rolex 3230; Rolex 3285
Type: Automatic; Automatic; Automatic
Origin: Not known; In-house; In-house
Power reserve (differs): 65 h; 70 h; 70 h
Frequency: 28,800 vph (4 Hz); 28,800 vph (4 Hz); 28,800 vph (4 Hz)
Jewels (differs): Not known; 31; 34
Certification: Not known; Superlative Chronometer; Superlative Chronometer
Functions (differs): Not known; Centre hour, minute and seconds hands
Stop-seconds for precise time setting; 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
Complications (differs): Chronograph; Central seconds
Hacking (stop) seconds; Central seconds
Date
GMT / second time zone
Hacking (stop) seconds

The watches side by side