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Differs

Grand Seiko SportSBGJ277

Shape: Not known; Not known; Round
Diameter (differs): 44.2 mm; 44 mm; 44 mm
Thickness (differs): 14.4 mm; 12.8 mm; 15.65 mm
Lug to lug (differs): 50.6 mm; 48 mm; Not known
Lug width (differs): 21 mm; 20 mm; 22 mm
Material: Stainless steel; Stainless steel; Stainless steel
Bezel: Not known; Unidirectional rotating; Unidirectional rotating
Caseback: Screw-down; Screw-down; Screw-down
Crystal (differs): Sapphire, Domed, Anti-reflective inside; Sapphire; Sapphire, Domed, Anti-reflective on both sides
Crown: Screw-down; Screw-down; Screw-down
Water resistance: 200 m; 200 m; 200 m
Antimagnetic: 60 gauss; Not known; Not known
Weight: 188 g; Not known; Not known

Calibre (differs): Grand Seiko 9S86; Not known; Breitling 13
Type: Automatic; Automatic; Automatic
Origin: In-house; Not known; Not known
Power reserve (differs): 55 h; 38 h; 48 h
Frequency (differs): 36,000 vph (5 Hz); 28,800 vph (4 Hz); 28,800 vph (4 Hz)
Jewels (differs): 37; Not known; 25
Functions (differs): Rotating bezel (24-hour display)
Screw-down crown
37 jewels
24-hour hand (dual time display function)
Calendar-linked time difference adjustment function; Hours, minutes, seconds
Date; 1/4th second, 30 minutes, 12 hours
Dial aperture
Complications (differs): Date
GMT / second time zone; Date; Chronograph
Date
Small seconds

The watches side by side