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 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
![[WTS] IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)](https://preview.redd.it/g7lpxnurvp9g1.jpg?width=640&crop=smart&auto=webp&s=849374380fedfb30999937aa75edfdaf8cbe9b40)
IWC Ingenieur Automatic 40 Full Steel Black Dial 2017 (Full-Set/Unpolished)
This IWC Ingenieur Automatic 40 is a modern classic in excellent condition. The black dial offers strong legibility and a balanced aesthetic. The watch comes complete with original boxes and papers.
- Condition: Excellent overall condition, with light honest signs of wear
- Case diameter: 40mm
- Water resistance: 3 ATM (30 meters)
- Bracelet: stainless steel with all links
![[WTS] IWC Ingenieur Aqua Green IW328903](https://preview.redd.it/p3xbguw6kd9g1.jpg?width=640&crop=smart&auto=webp&s=481a1d534f0431fd00f1d5d972fcd83312ed238c)
IWC Ingenieur Aqua Green IW328903
The watch features a beautiful Aqua Green dial and is in excellent condition, with only minor hairlines on the middle links.
- Condition: 9/10, minor hairlines on middle links
- Case material: polished steel
- Warranty status: active until September 3, 2032
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
IWC Ingenieur Automatic - 40mm - Black Dial - IW328901 ( unworn / 2025 )
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
1980's IWC Ingenieur Ref. IW3506 with Box
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