IWC Ingenieur Ingenieur SL Perpetual Calendar / Strap / English
Reference IW3540-03
About this watch
The IWC IW3540-03 Ingenieur SL Perpetual Calendar is a true horological marvel, combining exquisite craftsmanship with cutting-edge technology. Its unique features and timeless aesthetic make it more than just a timekeeper; it's a statement piece. The watch boasts an elegant yellow gold case, a white dial with stick and dot indexes, and a perpetual calendar complication that accounts for varying month lengths and leap years. At the heart of this masterpiece is the IWC caliber 35782 movement, known for its reliability and precision. With a power reserve of 42 hours and a frequency of 28,800 vibrations per hour, it ensures accurate timekeeping day in and day out. The watch's comfort and style make it ideal for daily wear and special occasions, with a water resistance of 30 meters typical for a dress watch. Whether you're a seasoned collector or a first-time luxury watch buyer, the IW3540-03 is a versatile choice that will serve you well for years to come.
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Key Features
- Yellow gold case
- Perpetual calendar complication
- Moonphase indicator
- IWC caliber 35782 movement
- 42-hour power reserve
- 28,800 vibrations per hour
- 30-meter water resistance
Specifications
- Brand
- IWC
- Family
- Ingenieur
- Model
- Ingenieur SL Perpetual Calendar / Strap / English
- Reference
- IW3540-03
- Movement
- 35782
- Movement Features
-
- Hours, Minutes, Seconds
- Date, Day, Leap Year, Month, Perpetual Calendar, Year Indicator
- Moonphase
- Case
- Yellow Gold 34.5mm
- Dial Color
- White
- Crystal
- Sapphire
- Water Resistance
- 30
Current Listings

IWC Ingenieur Automatic - 40mm - Titanium - IW328904 ( unworn / 2025 )
This listing is for an unworn IWC Ingenieur Automatic 40mm Grey Dial Titanium watch, complete with all original packaging and documentation.
- Condition: Unworn
- Case material: Titanium
- Movement: IWC 32111 Calibre
- Diameter: 40mm
IWC Ingenieur Black Dial IW322701 Automatic 42mm
This IWC Ingenieur Black Dial IW322701 Automatic is a 42.5mm mechanical automatic watch with date function and stainless steel case.
- Condition: 90%
- Case size: 42.5mm diameter
- Movement: Mechanical Automatic (80110)
- Case material: Stainless Steel
IWC INGENIEUR IW451501 Mid-size 34mm Stainless Steel
The IWC Ingenieur Mid Size is a mechanical automatic watch with date function and stainless steel case. It measures 34mm in size, making it a compact and stylish timepiece.
- Condition: 90%
- Case material: Stainless Steel
- Movement type: Mechanical Automatic
- Size description: 34mm diameter
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
IWC Ingenieur Aqua Green IW328903 LNIB
A pristine IWC Ingenieur with an Aqua Green dial, complete with warranty card and other original accessories.
- Condition: Like New in Box (LNIB)
- Year: 2024
- Warranty card: present

BNIB IWC IW328904 Ingenieur TITANIUM 40 NEW MODEL Grey Dial 2025
This is a brand new IWC Ingenieur model with a grey dial and titanium case. It comes in full box/papers and has the remaining manufacturer warranty.
- Condition: Brand new, unworn
- Material: Titanium
- Case size: 40mm diameter

IWC Ingenieur Automatic - 40mm - Aqua Dial - IW328903 ( excellent / 2025 )
A 40mm stainless steel IWC Ingenieur Automatic with an Aqua Dial and IWC 32111 Calibre Movement, coming with a complete set including boxes, papers, booklets, tools, hang tag, and IWC Warranty Card.
- Condition: Excellent
- Case size: 40mm
- Movement: IWC 32111 Calibre