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Differs

IWC Schaffhausen Ingenieur Automatic 42IW338902

Shape: Round; Round; Round
Diameter: 42 mm; 42 mm; 42 mm
Thickness (differs): 14.1 mm; 11.5 mm; Not known
Lug width (differs): 22 mm; 14 mm; 21 mm
Material (differs): Rolesor (steel and gold); Ceramic; 18k yellow gold
Bezel: Bidirectional rotating; Not known; Bidirectional rotating
Bezel insert: Not known; Not known; Cerachrom ceramic, Black
Caseback (differs): Screw-down; Display (sapphire); Screw-down
Crystal (differs): Sapphire; Sapphire, Domed, Anti-reflective on both sides; Sapphire
Cyclops: Yes; Not known; Yes
Crown: Screw-down; Not known; Screw-down
Water resistance: 100 m; 100 m; 100 m

Calibre (differs): Rolex 9002; IWC 82110; Rolex 3235
Type: Automatic; Automatic; Automatic
Origin: In-house; Not known; In-house
Power reserve (differs): 80 h; 60 h; 70 h
Frequency: 28,800 vph (4 Hz); 28,800 vph (4 Hz); 28,800 vph (4 Hz)
Jewels (differs): 40; 22; 31
Certification: Superlative Chronometer; Not known; Superlative Chronometer
Functions (differs): Centre hour, minute and seconds hands
24-hour display on off-centre disc
Second time zone
Instantaneous annual calendar at 3 o'clock and rapid-setting of the date
Month display via 12 apertures around the circumference of the dial
Stop-seconds for precise time setting; Central hacking seconds
Date display; Centre hour, minute and seconds hands
Instantaneous date with rapid setting
Stop-seconds for precise time setting
Complications (differs): Annual calendar
Central seconds
Date
GMT / second time zone
Hacking (stop) seconds
Month; Central seconds
Date
Hacking (stop) seconds; Central seconds
Date
Hacking (stop) seconds

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