IWC
IWC Portugieser Chronograph (Chrono-Automatic) IW371446
The IWC Portugieser Chronograph (Chrono-Automatic) (reference IW371446) is a 40.9 mm stainless steel watch with a silver (blue hands) dial. It runs on the automatic caliber 79350 with a 44-hour power reserve and is water resistant to 30 m. It was made from 2012 to 2019.
Specifications
Case
- Reference
- IW371446
- Collection
- Portugieser
- Case size
- 40.9 mm
- Thickness
- 12.3 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 30 m
- Bracelet / strap
- Leather strap
Dial and bezel
- Dial
- Silver (blue hands)
Movement
- Movement
- Automatic
- Caliber
- 79350
- Power reserve
- 44 hours
- Frequency
- 28,800 vph
- Jewels
- 31
- Functions
- Chronograph, Small seconds
Production
- Production
- 2012–2019
How it compares within the Portugieser family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| IW371446 (This watch) | 40.9 mm | Stainless steel | Silver (blue hands) | 79350 | 2012–2019 |
| IW358304 | 40.4 mm | Stainless steel | Silver (blue hands) | 82200 | 2020– |
| IW358305 | 40.4 mm | Stainless steel | Blue | 82200 | 2020– |
| IW358310 | 40.4 mm | Stainless steel | Green | 82200 | 2020– |
| IW371604 | 41 mm | Stainless steel | Silver (gold-plated hands) | 69355 | 2020– |
| IW371606 | 41 mm | Stainless steel | Blue | 69355 | 2020– |
| IW371615 | 41 mm | Stainless steel | Green | 69355 | 2020– |
| IW371617 | 41 mm | Stainless steel | Silver (blue hands) | 69355 | 2020– |
| IW503703 | 44.4 mm | 18k white gold | Ice blue | 52616 | 2024– |
About the Portugieser family
The Portugieser began in the late 1930s, when two Portuguese merchants asked IWC for a wristwatch as precise as a marine chronometer. IWC fitted a pocket-watch movement into a large wristwatch case, which gave the line its size and its clean, railway-track dial.
The modern family includes the Portugieser Chronograph, first introduced in the 1990s and updated in 2020, the Portugieser Automatic with a seven-day power reserve, perpetual calendars, minute repeaters and tourbillons. Calibers in the catalog include the 52010 and 51011. Dealers identify the generation and metal from the reference and check the dial, strap and papers.
Quick answers
- What size is the IWC Portugieser Chronograph (Chrono-Automatic) IW371446?
- The IWC Portugieser Chronograph (Chrono-Automatic) IW371446 has a 40.9 mm case, 12.3 mm thick.
- What movement does the IWC Portugieser Chronograph (Chrono-Automatic) IW371446 use?
- It uses the automatic caliber 79350, with a 44-hour power reserve.
- How water resistant is the IWC Portugieser Chronograph (Chrono-Automatic) IW371446?
- It is water resistant to 30 metres.
- Is the IWC Portugieser Chronograph (Chrono-Automatic) IW371446 still in production?
- No. It was made until 2019.
- When did the IWC Portugieser Chronograph (Chrono-Automatic) IW371446 come out?
- It was introduced in 2012 and made until 2019.
- What is the IWC Portugieser Chronograph (Chrono-Automatic) IW371446 made of?
- The case is stainless steel. Bracelet or strap: Leather strap.
Catalog facts checked September 2026.