IWC Grande Complication 3770 Rose Gold / Ardoise / English Ref. IW3770-25

The IWC Grande Complication 3770 Rose Gold / Ardoise / English IW3770-25 has a 42.2 mm rose gold case, measures 16.3 mm thick, and is water resistant to 10 metres.

IWC introduced its first 'Grande Complication' wristwatch at the 1990 Basel watch fair. Building upon the platform that Kurt Klaus' perpetual calendar module had provided them, IWC went ahead and added a minute repeater to the already complex movement. The case measured 42.2mm across at a height of 16.3mm, making it of considerable size - especially at the time of introduction. Reference IW3770-25 is part of the second generation of Grande Complication's, being distinguished by the updated dial design and 'dauphine' hands.

Diameter: 42.2 mm
Thickness: 16.3 mm
Water resistance: 10 m
Case: Rose Gold
Released: 1990
Movement: IWC caliber 79091

Specifications

Case and dimensions

Case diameter: 42.2 mm
Thickness: 16.3 mm
Lug width: 22 mm
Case shape: Round
Case material: Rose Gold
Crystal: Sapphire
Case back: Closed
Water resistance: 10 m

Dial

Dial name: Ardiose
Dial colour: Grey
Finish: Sunburst
Indexes: Stick / Dot
Hands: Dauphine

Movement

Calibre: IWC caliber 79091
Movement maker: IWC
Movement type: Automatic
Display: Analog
Power reserve: 44 h
Frequency: 28800 vph
Jewels: 75
Complications: Chronograph, Date, Day, Hours, Minute Repeater, Minutes, Month, Moonphase, Perpetual Calendar, Small Seconds and Year Indicator