IWC Ingenieur Ingenieur Constant-Force Tourbillon Red Gold / Ceramic
Reference IW5900-02
About this watch
The IWC IW5900-02 Ingenieur Constant-Force Tourbillon is a masterpiece of horology, seamlessly combining precision engineering with timeless elegance. This statement piece boasts exceptional craftsmanship and design, featuring an innovative constant force mechanism, durable red gold and ceramic materials, and an impressive 96-hour power reserve. With its large size and versatile styling, this watch complements any occasion, from formal events to casual outings. The IWC manufactured 94800 caliber movement is a marvel of watchmaking, boasting a tourbillon escapement and patented constant force mechanism. This timepiece is built to withstand the elements, with water resistance up to 120 meters and sapphire glass protection. Whether you're looking for a conversation starter or a symbol of horological mastery, the IWC IW5900-02 Ingenieur Constant-Force Tourbillon is an investment in craftsmanship, exclusivity, and the story behind the piece.
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Key Features
- IWC Caliber 94800 movement
- Red Gold and Ceramic materials
- Sapphire glass protection
- Tourbillon escapement
- Constant force mechanism
- 96-hour power reserve
- Water resistance up to 120 meters
Specifications
- Brand
- IWC
- Family
- Ingenieur
- Model
- Ingenieur Constant-Force Tourbillon Red Gold / Ceramic
- Reference
- IW5900-02
- Movement
- 94800
- Movement Features
-
- Minutes, Hours, Small Seconds
- Moonphase
- Constant Force Mechanism, Tourbillon Escapement, Power Reserve Indicator
- Case
- 46mm
- Dial Color
- Black
- Crystal
- Sapphire
- Water Resistance
- 120
Current Listings
![[WTS] IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)](https://preview.redd.it/a1xvysfqy6dg1.jpg?width=640&crop=smart&auto=webp&s=76a78581023770add7c172502c699d33848fc042)
IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)
- 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
![[WTS]: IWC Ingenieur 40 Blue Dial IW328907 + EXTRAS (adjustable clasp, links)](https://preview.redd.it/y5gi81t4mrcg1.jpg?width=640&crop=smart&auto=webp&s=3f289be40a8d0239c4f8aa2f518005b5ec338c27)
: IWC Ingenieur 40 Blue Dial IW328907 + EXTRAS (adjustable clasp, links)
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
![[WTS] IWC Ingenieur 40 Homage](https://preview.redd.it/2qldu6rppdcg1.jpg?width=640&crop=smart&auto=webp&s=6fdc1eb4a61fdcea842b1b74b7b42771e605d242)
IWC Ingenieur 40 Homage
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
![[WTS] IWC Ingenieur Automatic 40 IW328903 Steel Green Grid Dial Box Papers 2025](https://preview.redd.it/w6ppgqmwq4cg1.jpg?width=640&crop=smart&auto=webp&s=39687a5ed0a203d8a2e80cc64a443f49dd44531f)
IWC Ingenieur Automatic 40 IW328903 Steel Green Grid Dial Box Papers 2025
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
![[WTS] IWC Ingenieur 3521 Fullset - $7500](https://preview.redd.it/ebpv96u7t3cg1.jpg?width=640&crop=smart&auto=webp&s=50b3a870958d70b687adccd7800fe01619a428ad)
IWC Ingenieur 3521 Fullset - $7500
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
![[WTS] IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)](https://preview.redd.it/j5x4di1soibg1.jpg?width=640&crop=smart&auto=webp&s=6e40f64156f653cae5a5fd76ec24874bd88fafeb)
IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)
This all-original IWC Ingénieur Ref. IW323902 is a modern classic offered in never polished stainless steel and features a black dial with strong legibility and technical aesthetic.
- Condition: Excellent overall condition, light honest signs of wear
- Movement Service History: professionally serviced in December 2025
- Depth Rating: 30m water resistance
- Bracelet Adjustment Pins: includes original adjustment pins
![[WTS] IWC Ingenieur Aqua Green IW328903](https://preview.redd.it/ral8pdsg17bg1.jpg?width=640&crop=smart&auto=webp&s=d431504619ef3e3fae9fa9be04cdb237ed853cd5)
IWC Ingenieur Aqua Green IW328903
This 40mm Ingenieur features an Aqua Green dial and is in excellent condition, with a flawless crown and glass.
- Condition: 9/10, minor hairlines on middle links
- Warranty expiration date: September 3, 2032
- Accessories included: original box, papers, warranty card
![[WTS] IWC Ingenieur blue dial](https://preview.redd.it/ydqlboj6qyag1.jpg?width=640&crop=smart&auto=webp&s=b1f230ce314346ea8977fdf68ca414a6a57c24b6)
IWC Ingenieur blue dial
A well-maintained IWC Ingenieur with blue dial is available for sale. The watch features a 40mm diameter and comes with box, papers, micro adjust clasp, original butterfly clasp, and extra links.
- Condition: Excellent, minor scratches on micro adjust clasp and links
- Case Diameter: 40mm
- Water Resistance Depth: 100m
- Power Reserve Duration: 120 hours
IWC Ingenieur Automatic - IW323902 - Black - Stainless Steel - 39mm - Mint
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