Description
The Five-Digit Submariner Icon
The IWC Portuguese Chronograph Rattrapante ref. IW3712 is one of the most technically impressive watches IWC has ever produced. A split-seconds chronograph allows the measurement of two simultaneous events with a single timepiece, requiring a mechanism of extraordinary complexity hidden within the elegant 42mm Portuguese case. Powered by IWC Calibre 76240, this is IWC engineering at its most ambitious.
Specifications
Brand
IWC Schaffhausen
Reference
IW3712
Year
ca. 2005
Material
Stainless Steel
Caliber
IWC Cal. 76240 Rattrapante
2005
Rattrapante era
42 mm
Portuguese case diameter
Cal. 76240
Split-seconds movement
Two times simultaneously. One watch. Extraordinary complexity.
Condition:
This Portuguese Rattrapante IW3712 presents in excellent condition. The stainless steel case retains its fine proportions, the silver dial is clean and the three pusher positions for the split-seconds function operate with the precise feel that IWC’s movement demands.
The Heart:
The IWC Calibre 76240 is a rattrapante chronograph movement of exceptional complexity, featuring a split-seconds mechanism that allows two simultaneous lap times to be captured independently. The movement represents one of the most challenging complications in Swiss horology.
Guarantee:
As a pre-owned 2005 IWC with a complex rattrapante movement, this watch should be serviced exclusively by an IWC-trained specialist or the manufacturer’s own service centre. The rattrapante mechanism requires expert knowledge to service correctly.
Authenticity:
The IW3712 is defined by its Portuguese case, silver three-register dial, and crucially its third pusher at 10 o’clock for the rattrapante function — a detail that immediately distinguishes the split-seconds model from the standard Portuguese Chronograph.
1939
1980
1993
2005
2007
2015
2010
2020
Today
IWC's Most Complex Chronograph
What IWC combines the elegance of the Portuguese case with the ultimate complication of split-seconds timing?
The Portuguese Rattrapante sits at the apex of IWC’s chronograph range. The rattrapante complication — capable of recording two simultaneous elapsed times — demands far more movement complexity than a standard chronograph, and IWC’s Calibre 76240 delivers it within the refined Portuguese case with characteristic Schaffhausen precision.
Split seconds, singular achievement.
The IWC Portuguese Rattrapante IW3712 is a watch for those who appreciate the full depth of what Swiss watchmaking can achieve. Its split-seconds complication, elegant Portuguese proportions and Schaffhausen engineering combine to create one of IWC’s most exceptional timepieces.
