IWC Ingenieur Big Ingenieur Chronograph 'DFB'

Reference IW3784-04

About this watch

The IWC Ingenieur IW3784-04 Big Ingenieur Chronograph 'DFB' is a masterpiece of luxury watchmaking. This limited edition timepiece combines exceptional craftsmanship with innovative engineering, resulting in a piece that's both functional and aesthetically stunning. Its stainless steel case gleams under the light, showcasing the meticulous polish and finish that IWC is known for. The sapphire glass covering the dial is scratch-resistant, ensuring your watch maintains its pristine condition even after years of use. Plus, the open case back gives enthusiasts a peek into the intricate workings of the movement, a feature that adds to its allure. The Big Ingenieur Chronograph 'DFB' boasts a robust automatic mechanism, with a power reserve of 68 hours and a water resistance rating of 120 meters. Its chronograph function allows you to measure elapsed time, while the flyback feature means you can reset the chronograph with a single push of a button. This is particularly useful for timing multiple events in succession, making it a favorite among sports enthusiasts. With its striking design, remarkable movement, and limited availability, this watch stands as a testament to what luxury watchmaking should be about.

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Key Features

45.50 mm stainless steel case
Sapphire crystal glass
IWC caliber 89361 self-winding movement
Chronograph function with flyback feature
Water resistance up to 120 meters
Limited production of just 250 units

Specifications

Brand

IWC

Family

Ingenieur

Model

Big Ingenieur Chronograph 'DFB'

Reference

IW3784-04

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

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

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IWC Ingenieur Automatic 40 IW328904 | Titanium | Near-Mint | Full Set

IWC - IW328904 · $13,250

The IWC Ingenieur Automatic 40 is a modern reinterpretation of the iconic Gerald Genta-inspired integrated sports watch, featuring a titanium case and grey grid dial. It's lightweight, versatile, and powered by IWC’s in-house Calibre 32111.

Condition: Near-Mint
Case material: Titanium
Diameter: 40mm
Thickness: 10.8mm

Posted at

Apr 14, 2026, 10:12 PM

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

IWC - IW328904 · $14,950

This IWC Ingenieur Automatic is a 40mm grey dial titanium watch with an automatic movement. It comes complete with all original boxes, papers, and tools.

Condition: unworn
Case size: 40mm diameter
Movement type: automatic

Posted at

Apr 14, 2026, 1:26 PM

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IWC Ingenieur Automatic 40mm Aqua IW328903 ( unworn / 2025 / box and papers )

IWC - IW328903 · $10,250

Up for sale is an unworn IWC Ingenieur Automatic 40mm Aqua Dial reference # IW328903, complete with all boxes and papers. It features a stainless steel case and the IWC 32111 Calibre Movement.

Condition: Unworn
Movement: IWC 32111 Calibre Movement
Case size: 40mm diameter
Depth rating: unknown

Posted at

Apr 14, 2026, 1:20 PM

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IWC Ingenieur 40 Aqua Dial, Pristine Condition, w/ service papers from IWC and Box

IWC - IW324-001 · $10,500

This is a listing for an IWC Ingenieur 40 Aqua Dial, with service papers from the manufacturer and included box.

Condition: Pristine
Water resistance: 30 bar
Service papers from iwc and box:

Posted at

Apr 10, 2026, 12:01 PM

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

IWC - IW378401 · $6,500

A watch for those who want a true chronograph tool with the elegance to double as a statement piece — robust for everyday use, refined for evenings. This timepiece combines heavy-duty engineering with fine watchmaking.

Case size: 45.5mm
Material: stainless steel
Band material: leather

Posted at

Apr 8, 2026, 6:49 PM

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IWC Ingenieur IW357001 Under Warranty till 2031 $2,600

IWC - IW357001 · $2,600

The IWC Ingenieur IW3570 combines a classic design with modern functionality, featuring a date complication and balanced proportions.

Condition: Pre-owned
Case Size: 40mm diameter
Case Thickness: 10.3mm
Lug Width: 20mm

Posted at

Apr 7, 2026, 11:36 AM

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IWC Ingenieur Automatic 40 IW328904 | Titanium | Near-Mint | Full Set

IWC - IW328904 · $13,250

The IWC Ingenieur Automatic 40 (Ref. IW328904) in titanium with grey grid dial is a modern reinterpretation of the iconic Gerald Genta-inspired integrated sports watch, featuring a lightweight and versatile design with a titanium case and bracelet.

Condition: Near-Mint
Case material: Titanium
Case dimensions: 40mm diameter | 10.8mm thickness
Dial color: Grey

Posted at

Apr 6, 2026, 10:26 PM

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2024 IWC Ingenieur Automatic 40 Ref. IW328903 Aqua Full Kit

IWC - IW328903 · $9,600

A 2024 IWC Ingenieur Automatic 40 Ref. IW328903 Aqua Full Kit is being sold with a clean crystal, pristine dial, and automatic movement running well.

Condition: Great condition overall, light signs of wear on stainless steel case and integrated bracelet
Case size: 40mm diameter
Movement type: Automatic

Posted at

Apr 6, 2026, 9:50 PM

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