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Differs

Longines Spirit Zulu TimeL3.812.4.50

Shape: Round; Round; Round
Diameter: 42 mm; 42 mm; 42 mm
Thickness (differs): Not known; 17 mm; 14.1 mm
Lug to lug (differs): Not known; 49.5 mm; 49.4 mm
Lug width (differs): 21 mm; 22 mm; 22 mm
Material (differs): Titanium; Titanium; Stainless steel
Bezel: Bidirectional rotating; Bidirectional rotating; Bidirectional rotating
Bezel insert: Cerachrom ceramic, Black; Not known; Not known
Caseback (differs): Screw-down; Display (sapphire); Solid
Crystal (differs): Sapphire; Sapphire, Anti-reflective on both sides; Sapphire, Anti-reflective on both sides
Cyclops: Yes; Not known; Not known
Crown: Screw-down; Screw-down; Screw-down
Water resistance: 100 m; 100 m; 100 m
Weight (differs): Not known; 124.7 g; 164 g

Calibre (differs): Rolex 3235; Longines L791.4; Longines L844.4
Type: Automatic; Automatic; Automatic
Origin: In-house; Not known; Not known
Power reserve (differs): 70 h; 68 h; 72 h
Frequency (differs): 28,800 vph (4 Hz); 28,800 vph (4 Hz); 25,200 vph (3.5 Hz)
Jewels (differs): 31; 28; 21
Certification (differs): Superlative Chronometer; COSC; COSC
Functions (differs): Centre hour, minute and seconds hands
Instantaneous date with rapid setting
Stop-seconds for precise time setting; Hours, minutes, small seconds at 9 o'clock
Chronograph mechanism: central 60 seconds hand and 30 minutes counter at 3 o'clock; Hours, minutes, seconds and date. 24 hours hand with time zone mechanism
Complications (differs): Central seconds
Date
Hacking (stop) seconds; Chronograph
Flyback chronograph
Small seconds; Date
GMT / second time zone

Colour (differs): Black; Anthracite; Black matte
Material: Brass; Not known; Not known
Pattern: Matte; Matte; Matte
Indices (differs): Baton; Applied, Arabic numerals; Applied, Arabic numerals
Hands (differs): Mercedes; Baton; Baton
Lume (differs): Chromalight; Super-LumiNova; Super-LumiNova

The watches side by side