IWC Ingenieur Big Ingenieur Chronograph Stainless Steel / Black / Strap

Reference IW3784-06

IWC Big Ingenieur Chronograph Stainless Steel / Black / Strap

About this watch

The IWC IW3784-06 Big Ingenieur Chronograph is a masterpiece of horology, boasting a robust stainless steel case and striking black dial that exudes sophistication. The watch's 45.50 mm round shape makes a bold statement on the wrist, while its sleek profile showcases durability and quality in its weight and finish. The open case back reveals the intricate inner workings of the IWC caliber 89361 movement, a testament to fine watchmaking. This automatic movement is precision-crafted with a frequency of 28,800 vibrations per hour and a power reserve of 68 hours, ensuring reliable performance. The flyback chronograph feature allows for easy timing, while the date function adds an extra layer of functionality. With its water resistance rating of 120 meters, this watch can handle daily wear and formal occasions alike. Whether you're a seasoned collector or a first-time buyer, the IWC IW3784-06 Big Ingenieur Chronograph is a timepiece that deserves a spot on your wrist.

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MSRP: $12,600

Market Price: $4,790

Key Features

IWC caliber 89361 automatic movement
45.50 mm stainless steel case
Black dial with stick and dot indexes
Flyback chronograph feature
Date function
120m water resistance
Sapphire crystal glass

Specifications

Brand

IWC

Family

Ingenieur

Model

Big Ingenieur Chronograph Stainless Steel / Black / Strap

Reference

IW3784-06

Movement

89361

Movement Features

Hours, Minutes, Small Seconds
Date
Chronograph, Flyback

Case

Stainless Steel 45.5mm

Dial Color

Black

Crystal

Sapphire

Water Resistance

120

Current Listings

IWC Ingenieur 40mm Aqua Dial 2025 Complete Kit

IWC - IW328903 · $9,500

This IWC Ingenieur features a 40mm Aqua Dial and has a thin 10.7mm case with a 120 hour power reserve.

Condition: Incredible Preowned Condition
Case thickness: 10.7mm
Diameter: 40mm
Power reserve: 120 hours

Posted at

Dec 11, 2025, 9:33 AM

Active

View listing on r/WatchExchange

IWC Micro Adjust Clasp for Ingenieur 40 & Others

IWC - IW32890x · $375

Additional details on a preowned IWC clasp for the Ingenieur 40 and other models, allowing micro adjustment instead of the stock butterfly clasp.

Condition: Excellent condition
Compatible Watches: Not specified, but confirmed compatible with 40mm IW32890x model Ingenieur. Cross reference required for other models.

Posted at

Dec 11, 2025, 9:28 AM

Active

View listing on r/WatchExchange

IWC Ingenieur Automatic IW357001 $2,699

IWC - IW357001 · $2,699

The IWC Ingenieur IW3570 is a well-crafted watch that combines classic design with modern functionality. It has balanced proportions and quality finishing, making it a strong contender in its category.

Condition: Pre-owned with minor scratches on polished bezel
Case Size: 40mm diameter
Case Thickness: 10.3mm
Lug Width: 20mm

Posted at

Dec 10, 2025, 12:49 PM

Active

View listing on r/WatchExchange