IWC - IW3770-13

Grande Complication 3770 Platinum / Silver / English

Brand: IWC
Family: Grande Complication
Reference: IW3770-13 (aka: 3770-13, IW377013)
Name: Grande Complication 3770 Platinum / Silver / English
Produced: 1990 - 2010
Limited: No


Material: Platinum
Glass: Sapphire
Back: Closed
Shape: Round
Diameter: 42.20 mm
Height: 16.30 mm
W/R: 10.00 m


Color: Silver
Indexes: Stick / Dot
Hands: Dauphine
IW3770-13 : IWC Grande Complication 3770 Platinum / Silver / English

Price in euro


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 IW3770-13 is part of the second generation of Grande Complication's, being distinguished by the updated dial design and 'dauphine' hands.


IWC caliber 79091 The IWC Calibre 79091 has been developed in 1991 and made up from base: Valjoux 7750 plus additionally the in-house made IWC perpetual calendar module & the in-house made IWC minute-repetition mechanism
The movements are decorated, assembled and regulated in Schaffhausen.

Base: ETA 7750
Reserve:44 h
Frequency:28800 bph
Time:Hours, Minutes, Small Seconds
Date:Date, Day, Month, Perpetual Calendar, Year Indicator
Acoustic:Minute Repeater

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