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IWC · Reference IW378303

IWC Portofino Chronograph Automatic Men's Watch IW378303

Representative illustration: black chronograph dial and silver bracelet. Actual IWC Portofino Chronograph Automatic Men's Watch IW378303 may differ.
Illustration only

Illustration only · Product photograph unavailable

Stainless steelCrocodile LeatherScratch Resistant SapphireTang30 meters / 100 feet

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

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1 offer

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$3,840.00
Lowest USD price · US market

Out of stock · Destination terms vary

$4,000.00$3,840.00Save 4%

Shipping not supplied · Observed 19 Sept 2026, 20:35 UTC

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Observed, never invented

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$3,840.00
Observed price history for IWC Portofino Chronograph Automatic Men's Watch IW378303 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. $4,100.00$4,000.00$3,900.00$3,800.00$3,700.00$3,600.00 Sep 13Sep 15Sep 17Sep 19 Jomashop: $3,840.00, 13 Sept 2026, 16:35 UTCJomashop: $3,840.00, 16 Sept 2026, 17:04 UTCJomashop: $3,840.00, 19 Sept 2026, 20:35 UTC Observation date Listed price (USD)
  • Jomashop$3,840.00 · 3 observations

Technical & Horological Attributes

Case material
Stainless steel
Bracelet
Crocodile Leather
Crystal
Scratch Resistant Sapphire
Clasp
Tang
Water resistance
30 meters / 100 feet
Dial
Black
Calendar
Day of the Week and Date display at the 3 o'clock position
Functions
Chronograph, Date, Day, Hour, Minute, Small Second
Hands
Silver-toned
Bezel
Fixed
Movement
IWC Calibre 79320

The WatchCurrent standard

Exact reference. Clear provenance.

Stainless steel case with a black crocodile bracelet. Fixed bezel. Black dial with silver-toned hands and index hour markers. Minute markers around the outer rim. Dial Type: Analog. Day of the week and date display at the 3 o'clock position. Chronograph - sub-dials displaying: 60-second, 30-minute, 12-hour. IWC Calibre 79320 automatic movement with about 44 hours of power reserve. Scratch resistant sapphire crystal. Case size: 41 mm. Round case shape. Tang clasp. Water resistant at 30 meters / 100 feet. Functions: chronograph, date, day, hour, minute, small second. Sport watch style. Watch label: Swiss Made. Item Variations: IW378303, 3783-03, 3783/03, 378303, IWC-3783-03. IWC Portofino Chronograph Automatic Men's Watch IW378303.

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