Side by side

Differs

Rolex GMT‑Master II126710BLNR

Shape: Round; Round; Round
Diameter: 40 mm; 40 mm; 40 mm
Thickness: Not known; Not known; 11.9 mm
Lug width (differs): 25 mm; 20 mm; 20 mm
Material (differs): Rolesor (steel and gold); Oystersteel; Rolesor (steel and gold)
Bezel (differs): Fluted; Bidirectional rotating; Tachymeter
Bezel insert: Not known; Cerachrom ceramic, Blue/black; Not known
Caseback: Screw-down; Screw-down; Screw-down
Crystal: Sapphire; Sapphire; Sapphire
Cyclops (differs): Yes; Yes; No
Crown: Screw-down; Screw-down; Screw-down
Water resistance: 100 m; 100 m; 100 m

Calibre (differs): Rolex 7135; Rolex 3285; Rolex 4131
Type: Automatic; Automatic; Automatic
Origin: In-house; In-house; In-house
Power reserve (differs): 67 h; 70 h; 72 h
Frequency (differs): 36,000 vph (5 Hz); 28,800 vph (4 Hz); 28,800 vph (4 Hz)
Jewels (differs): 39; 34; 47
Certification: Superlative Chronometer; Superlative Chronometer; Superlative Chronometer
Functions (differs): Centre hour, minute and seconds hands
Instantaneous date with rapid setting
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; Centre hour and minute hands, small seconds hand at 6 o'clock
Chronograph via centre seconds hand, 30-minute counter at 3 o'clock and 12-hour counter at 9 o'clock
Stop seconds for exact time setting
Complications (differs): Central seconds
Date
Hacking (stop) seconds; Central seconds
Date
GMT / second time zone
Hacking (stop) seconds; Chronograph
Small seconds

The watches side by side