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 Chronograph Limited Rudolph Caracciola Racing Edition Ref IW380702

IWC Ingenieur Chronograph Limited Rudolph Caracciola Racing Edition Ref IW380702

IWC - IW380702 · $3,450
A limited edition IWC Ingenieur Chronograph, released in honor of Rudolf Caracciola, featuring a gray sunburst dial and in-house chronograph caliber 69370 movement.

  • Condition: Super clean, light wear
  • Movement: In house automatic chronograph caliber 69370
  • Case Size: 42MM stainless case, unpolished
  • Diameter: 40mm diameter
Posted at
Apr 27, 2026, 9:26 PM
Active
[WTS] IWC Big Ingenieur Flyback Chronograph – Guilloché Dial – Box & Papers

IWC Big Ingenieur Flyback Chronograph – Guilloché Dial – Box & Papers

IWC - IW378401 · $6,500
A timepiece that combines heavy-duty engineering with fine watchmaking, featuring a guilloché dial and flyback chronograph functionality.

  • Case size: 45.5mm diameter
  • Power reserve: 68h
  • Movement type: in-house Calibre 89360
Posted at
Apr 25, 2026, 3:14 PM
Active
[WTS] IWC Ingenieur Automatic 40mm Titanium IW328904 ( unworn / 2025 / box and papers )

IWC Ingenieur Automatic 40mm Titanium IW328904 ( unworn / 2025 / box and papers )

IWC - IW328904 · $14,450
Up for sale is an unworn IWC Ingenieur Automatic 40mm Grey Dial Titanium watch, complete with all boxes, papers, and tools.

  • Condition: Unworn
  • Case size: 40mm diameter
  • Movement: IWC 32111 Calibre
Posted at
Apr 24, 2026, 1:54 PM
Active
[WTS] Limited Edition IWC Ingenieur Chronograph Rudolph Caracciola Ref IW380702

Limited Edition IWC Ingenieur Chronograph Rudolph Caracciola Ref IW380702

IWC - IW380702 · $3,550
A limited edition IWC Ingenieur Chronograph released in 2016 to honor Rudolf Caracciola, featuring a gray sunburst dial with racing red pops and an in-house chronograph caliber 69370 movement.

  • Condition: Super clean, light wear
  • Case diameter: 42mm
  • Movement type: In house automatic chronograph
Posted at
Apr 20, 2026, 9:09 PM
Active
[WTS] IWC Ingenieur 40mm Aqua Dial, Fully Serviced by IWC, Full Kit Plus Service Papers

IWC Ingenieur 40mm Aqua Dial, Fully Serviced by IWC, Full Kit Plus Service Papers

A modern take on the Ingenieur design with a unique Aqua dial that catches the light beautifully. This watch is in great condition and comes with service papers, box, and full kit.

  • Condition: Fantastic, fully serviced by IWC
  • Case Size: 40mm diameter
  • Dial Color: Aqua
Posted at
Apr 19, 2026, 12:44 PM
Active
[WTS] IWC Ingenieur Automatic 40 IW328904 | Titanium | Grey Grid Dial | Near-Mint Full Set | $12,500 Shipped

IWC Ingenieur Automatic 40 IW328904 | Titanium | Grey Grid Dial | Near-Mint Full Set | $12,500 Shipped

IWC - IW328904 · $12,500
This IWC Ingenieur Automatic 40 is a recent release with a great wrist presence, excellent finishing, and added comfort of titanium. It comes with a full set including boxes, travel case, and other accessories.

  • Condition: Near-mint
  • Case material: Titanium
  • Dial color: Grey Grid
Posted at
Apr 16, 2026, 6:10 PM
Active
IWC Ingenieur Automatic  - IW323902 - Black - Stainless Steel - 39mm - Mint

IWC Ingenieur Automatic - IW323902 - Black - Stainless Steel - 39mm - Mint

IWC - IW323902 · $5,495
A pre-owned IWC Ingenieur Automatic in excellent condition, featuring a 39mm black stainless steel case and automatic movement. The watch is accompanied by its original box set, instruction manual, warranty card, and OEM rubber strap.

  • Condition: Pre-Owned - Grade: Mint
  • Case size: 39mm diameter
  • Bracelet type: Stainless Steel
  • Dial: Black
Posted at
Apr 8, 2025, 12:56 AM
Active
IWC Ingenieur Automatic - 40mm - Black Dial - IW328901 ( unworn / 2025 )

IWC Ingenieur Automatic - 40mm - Black Dial - IW328901 ( unworn / 2025 )

IWC - IW328901 · $9,995
This IWC Ingenieur Automatic watch features a 40mm stainless steel case and black dial, coming with all original boxes and papers.

  • Condition: unworn
  • Case size: 40mm diameter
  • Movement: IWC 32111 Calibre
Posted at
Mar 28, 2025, 3:41 PM
Active
1980's IWC Ingenieur Ref. IW3506 with Box

1980's IWC Ingenieur Ref. IW3506 with Box

IWC - IW3506 · $5,950
The IWC Ingenieur Ref. IW3506 is a vintage watch originally launched in 1955 as an anti-magnetic timepiece for engineers, featuring a soft iron inner case and IWC's Caliber 852. The Reference 3506 was introduced in the mid-1980s, offering a more wearable size with refined details like gold hour markers and a graph paper textured dial.

  • Condition: Vintage-Good
  • Movement: Automatic
  • Case Width: 35mm diameter
  • Strap Length: 7.50 inches
Posted at
Mar 27, 2025, 1:34 PM
Active