IWC Ingenieur Big Ingenieur Chronograph Stainless Steel / Silver / Strap

Reference IW3784-05

About this watch

The IWC Big Ingenieur Chronograph IW3784-05 is a stunning example of IWC's ingenuity, combining quality, durability, and aesthetics in a robust and striking stainless steel case with a diameter of 45.50 mm. The silver dial features stick and dot indexes offering a sleek modern look, while the open sapphire case back showcases the intricate IWC movement, inviting admiration from every angle. With a self-winding flyback chronograph movement boasting a 68-hour power reserve and a frequency of 28,800 vibrations per hour, this watch is precision that watch enthusiasts crave. The flyback chronograph function allows for quick resetting of the timer without having to stop it first, perfect for timing multiple events seamlessly. With a water resistance of up to 120 meters, this timepiece is designed to withstand the rigors of daily life. Whether you're in a boardroom meeting or out for a weekend brunch, the IW3784-05 exudes confidence and style.
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Key Features

  • Stainless steel case with diameter of 45.50 mm
  • Silver dial with stick and dot indexes
  • Open sapphire case back showcasing IWC movement
  • Self-winding flyback chronograph movement
  • 68-hour power reserve
  • Water resistance up to 120 meters

Specifications

Brand
IWC
Family
Ingenieur
Model
Big Ingenieur Chronograph Stainless Steel / Silver / Strap
Reference
IW3784-05
Movement
89361
Movement Features
  • Hours, Minutes, Small Seconds
  • Date
  • Chronograph, Flyback
Case
Stainless Steel 45.5mm
Dial Color
Silver
Crystal
Sapphire
Water Resistance
120

Current Listings

[WTS] IWC Ingenieur Green F1 “Sonny Hayes” Limited Edition IW328908

IWC Ingenieur Green F1 “Sonny Hayes” Limited Edition IW328908

IWC - IW328908 · $19,000
This IWC Ingenieur Automatic 40 has a unique Green 'Grid'-patterned dial inspired by a bespoke watch from Apple Original Films' movie F1. It's limited to 1000 pieces and has been worn only a few times.

  • Condition: Pre-owned with hairlines on the bracelet
  • Limited edition quantity: 1000
Posted at
Nov 5, 2025, 11:45 AM
Active
[WTS] IWC Ingenieur Chronograph ref. IW3805.01 circa late 1990s

IWC Ingenieur Chronograph ref. IW3805.01 circa late 1990s

IWC - IW3805.01 · $5,450
This is a Neo-vintage gem featuring a tri-compax configuration, tritium dial, and exceptional accuracy—a professional tool watch designed by Gerald Genta.

  • Condition: Minty crisp
  • Movement: Quartz, IWC Cal. 633 JLC
  • Alarm: Unreliable
  • Box papers: No box or papers; appears to be fully linked
Posted at
Nov 4, 2025, 6:34 PM
Active
[WTS] IWC Ingenieur GMT Freshly Serviced by IWC Ref IW324404

IWC Ingenieur GMT Freshly Serviced by IWC Ref IW324404

IWC - IW324404 · $4,450
This is a modern iteration of the IWC Ingenieur GMT, featuring a white dial and blue accents. It has a date function, GMT hand, and a clean layout.

  • Condition: Excellent, serviced by IWC
  • Case size: 43mm diameter
  • Bracelet size adjustment: quick adjust system, fits up to 7.25 inches
Posted at
Nov 3, 2025, 8:45 PM
Active
[WTS] IWC Schaffhausen Ingenieur Automatic 35 black dial, under warranty until May 2033

IWC Schaffhausen Ingenieur Automatic 35 black dial, under warranty until May 2033

This is the black dial, stainless steel, 35mm model of IWC's Ingenieur Automatic watch. It has an incredibly comfortable integrated bracelet and a height of 9.4mm.

  • Condition: Excellent/like new
  • Case Size: 35.1 mm diameter
  • Height: 9.4mm
  • Glass: sapphire crystal with anti-reflective coating
Posted at
Nov 3, 2025, 4:00 PM
Active
[WTS] IWC Ingenieur Aqua Green IW328903

IWC Ingenieur Aqua Green IW328903

IWC - IW328903 · $9,499
This IWC Ingenieur Automatic presents in excellent condition, featuring a striking aqua green dial and modern case design. The set includes a double box, quick-release tool, warranty card, and extended factory warranty coverage.

  • Condition: excellent overall condition with minor surface marks
  • Water resistance: 30m
  • Bracelet dimensions: 20cm long, 24 links
Posted at
Oct 31, 2025, 6:02 PM
Active
[WTS] IWC Ingenieur Automatic Ref. IW323906 — 40 mm - Full Set with Warranty

IWC Ingenieur Automatic Ref. IW323906 — 40 mm - Full Set with Warranty

IWC - IW323906 · $5,750
A modern evolution of the IWC Ingenieur design, this watch features a stainless-steel case, silver dial, and automatic movement. It showcases Gérald Genta's geometric precision and offers a balance between technical robustness and understated elegance.

  • Condition: Excellent overall
  • Case Diameter: 40 mm
  • Thickness: 10 mm
  • Lug To Lug: 50 mm (including end links)
Posted at
Oct 30, 2025, 10:53 PM
Active
[WTS] IWC Ingenieur 3227 Full Set

IWC Ingenieur 3227 Full Set

IWC - 3227-01 · $3,900
A very solid and well-maintained IWC Ingenieur 3227-01 with a large case size of 42mm, featuring deep Genta ties and DNA.

  • Condition: 9+/10
  • Size: 42mm diameter
Posted at
Oct 24, 2025, 6:28 PM
Active