IWC Ingenieur Ingenieur SL Automatic Stainless Steel / Yellow Gold / Champagne / Bracelet

Reference IW3505-09

About this watch

The IWC IW3505-09 Ingenieur SL Automatic is a luxury timepiece that marries elegance with performance, featuring a stunning blend of stainless steel and yellow gold. Its champagne dial exudes warmth, while stick and dot indexes provide a classic touch. The watch is powered by the IWC Caliber 375, a self-winding movement based on the ETA 2892, offering precision and reliability. With a water resistance of 120 meters, this watch can handle swimming, snorkeling, or simply being caught in the rain without breaking a sweat. Its elegant design allows it to transition effortlessly between formal and informal settings, making it suitable for daily use without sacrificing style.
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Key Features

  • Stainless Steel and Yellow Gold Case
  • Sapphire Glass for Scratch Resistance
  • 120m Water Resistance
  • IWC Caliber 375 Self-Winding Movement
  • 42-Hour Power Reserve
  • 28,800 VPH Frequency
  • Analog Display with Stick Hands

Specifications

Brand
IWC
Family
Ingenieur
Model
Ingenieur SL Automatic Stainless Steel / Yellow Gold / Champagne / Bracelet
Reference
IW3505-09
Movement
375
Movement Features
  • Hours, Minutes, Seconds
  • Date
Case
34mm
Crystal
Sapphire
Water Resistance
120

Current Listings

[WTS]: IWC Ingenieur 40 Blue Dial IW328907 + EXTRAS (adjustable clasp, links)

: IWC Ingenieur 40 Blue Dial IW328907 + EXTRAS (adjustable clasp, links)

IWC - IW328907 · $9,300
The IWC Ingenieur Automatic is a 40mm blue dial watch with an IWC 32111 Calibre Movement. It features additional extras such as an adjustable clasp, links, and comes with all original boxes, papers, and warranty.

  • Condition: Excellent plus
  • Movement: IWC 32111 Calibre
  • Accessories: [object Object],[object Object],[object Object]
Posted at
Jan 18, 2026, 5:08 PM
Active
[WTS] IWC Ingenieur Automatic IW357001 $2,650

IWC Ingenieur Automatic IW357001 $2,650

IWC - IW357001 · $2,650
This previous generation IWC Ingenieur IW3570 is a well-crafted, comfortable, and aesthetically pleasing watch that combines a classic design with modern functionality. It features a date complication and has balanced proportions for comfortable wearability.

  • Condition: Pre-owned with minor scratches on polished bezel
  • Case size: 40mm diameter
  • Movement: IWC Caliber 35111 (Sellita SW300-1a based)
  • Power reserve: 42 hours
Posted at
Jan 16, 2026, 12:10 PM
Active
[WTS] IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)

IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)

IWC - IW323902 · $5,475
  • Condition: Excellent overall condition with only light, honest signs of wear
  • Size: 40mm diameter
  • Water Resistance: 30 meters (3 ATM)
  • Bracelet Links: complete set of links
Posted at
Jan 13, 2026, 5:18 PM
Active
[WTS]: IWC Ingenieur 40 Blue Dial IW328907 + EXTRAS (adjustable clasp, links)

: IWC Ingenieur 40 Blue Dial IW328907 + EXTRAS (adjustable clasp, links)

IWC - IW328907 · $9,500
This IWC Ingenieur Automatic 40mm Blue Dial features an IWC 32111 Calibre Movement, complete with original boxes and papers.

  • Condition: Excellent plus
  • Movement: IWC 32111 Calibre Movement
  • Clasp: MK XX micro-adjust clasp ($460 value from IWC)
  • Extras: 2 extra links for the Ingenieur
Posted at
Jan 11, 2026, 1:41 PM
Active
[WTS] IWC Ingenieur 40 Homage

IWC Ingenieur 40 Homage

IWC - Ingenieur 40 · $175
This IWC Ingenieur 40mm is a 'Seiko mod' with an NH35 movement, featuring extra links and nearly no signs of wear.

  • Condition: like new
  • Movement: NH35
  • Case size: 40mm
Posted at
Jan 9, 2026, 2:56 PM
Active
[WTS] IWC Ingenieur Automatic 40 IW328903 Steel Green Grid Dial Box Papers 2025

IWC Ingenieur Automatic 40 IW328903 Steel Green Grid Dial Box Papers 2025

IWC - IW328903 · $9,625
A newer IWC Ingenieur model featuring a beautiful aqua-green grid dial, applied indices, and a color-matched two-digit date wheel. It has a 40mm stainless steel case and an automatic Calibre 32111 movement with a 120-hour power reserve.

  • Condition: Excellent condition with light wear on the case and bracelet
  • Case size: 40mm
  • Material: stainless steel
Posted at
Jan 8, 2026, 8:47 AM
Active
[WTS] IWC Ingenieur 3521 Fullset - $7500

IWC Ingenieur 3521 Fullset - $7500

IWC - 3521-01 · $7,500
This listing is for an IWC Ingenieur 3521 watch, which comes with its original box and papers. The watch features a 34mm diameter T dial and hands.

  • Condition: unpolished original T dial
  • Diameter: 34mm
Posted at
Jan 8, 2026, 5:37 AM
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