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IWC · Reference IW378402

IWC Big Ingenieur Black Dial 18kt Rose Gold Brown Leather Men's Watch IW378402

Representative illustration: black chronograph dial and silver bracelet. Actual IWC Big Ingenieur Black Dial 18kt Rose Gold Brown Leather Men's Watch IW378402 may differ.
Illustration only

Illustration only · Product photograph unavailable

18kt Rose Gold15 mmLeatherScratch Resistant SapphireTang

Actual product photo unavailable. This illustration roughly matches the listed appearance; details may differ.

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Prices are compared only within the same currency and destination market; the lead group is USD for US. Other currency or market offers remain visible separately.

Jomashop1 listing · USD · US$21,074.00
Lowest USD price · US market

Out of stock · Destination terms vary

$25,700.00$21,074.00Save 18%

Shipping not supplied · Observed 20 Sept 2026, 01:51 UTC

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Price history

Dots mark validated retailer prices for the USD · US market group. Lines carry each listing's last observed price forward, starting at its first observation.

Lowest observed$21,074.00
Observed price history for IWC Big Ingenieur Black Dial 18kt Rose Gold Brown Leather Men's Watch IW378402 Step chart of 3 validated retailer price observations. Each listing's last observed price is carried forward from its first observation to the chart's end. Dots mark actual observations. The horizontal axis is observation date and the vertical axis is listed price in USD. $22,500.00$22,000.00$21,500.00$21,000.00$20,500.00$20,000.00$19,500.00 Sep 13Sep 15Sep 18Sep 20 Jomashop: $21,074.00, 13 Sept 2026, 21:46 UTCJomashop: $21,074.00, 16 Sept 2026, 22:16 UTCJomashop: $21,074.00, 20 Sept 2026, 01:51 UTC Observation date Listed price (USD)
  • Jomashop$21,074.00 · 3 observations

Technical & Horological Attributes

Case material
18kt Rose Gold
Case thickness
15 mm
Bracelet
Leather
Crystal
Scratch Resistant Sapphire
Clasp
Tang
Water resistance
120 meters / 400 feet
Dial
Black
Calendar
Date display at the 6 o'clock position
Functions
Chronograph, FlyBack, Date, Hour, Minute, Small Second
Hands
Luminous
Bezel
Fixed
Movement
IWC Calibre 89360

The WatchCurrent standard

Exact reference. Clear provenance.

18k rose gold case with a brown leather strap. Fixed bezel. Black dial with luminous hands and index hour markers. Tachymeter scale appears around the outer rim. Dial Type: Analog. Chronograph - two sub-dials displaying: 60 second and 60 minute. Automatic movement. Scratch resistant sapphire crystal. Case diameter: 45.5 mm. Case thickness: 15 mm. Round case shape. Tang clasp. Water resistant at 120 meters / 400 feet. Functions: chronograph, date, hour, minute, second. Luxury watch style. Watch label: Swiss Made. IWC Big Ingenieur Black Dial 18kt Rose Gold Brown Leather Men's Watch IW378402.

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