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Differs

Longines HydroconquestL3.781.3.56

Longines HydroconquestL3.781.4.05

Shape: Round; Round; Round
Diameter: 41 mm; 41 mm; 41 mm
Thickness: 11.9 mm; Not known; 11.9 mm
Lug to lug: 51.1 mm; Not known; 51.1 mm
Lug width: 21 mm; 21 mm; 21 mm
Material (differs): Stainless steel; Oystersteel; Stainless steel
Bezel: Unidirectional rotating; Unidirectional rotating; Unidirectional rotating
Bezel insert: Not known; Cerachrom ceramic, Green; Not known
Caseback: Screw-down; Screw-down; Screw-down
Crystal (differs): Sapphire, Anti-reflective on both sides; Sapphire; Sapphire, Anti-reflective on both sides
Cyclops: Not known; Yes; Not known
Crown: Screw-down; Screw-down; Screw-down
Water resistance: 300 m; 300 m; 300 m
Weight (differs): 184.2 g; Not known; 183 g

Calibre (differs): Longines L888.5; Rolex 3235; Longines L888.5
Type: Automatic; Automatic; Automatic
Origin: Not known; In-house; Not known
Power reserve (differs): 72 h; 70 h; 72 h
Frequency (differs): 25,200 vph (3.5 Hz); 28,800 vph (4 Hz); 25,200 vph (3.5 Hz)
Jewels (differs): 21; 31; 21
Certification: Not known; Superlative Chronometer; Not known
Functions (differs): Hours, minutes, seconds and date; Centre hour, minute and seconds hands
Instantaneous date with rapid setting
Stop-seconds for precise time setting; Hours, minutes, seconds and date
Complications (differs): Date; Central seconds
Date
Hacking (stop) seconds; Date

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

The watches side by side