IWC
IWC Ingenieur Automatic IW323904
The IWC Ingenieur Automatic (reference IW323904) is a 39 mm stainless steel watch with a silver dial. It runs on the automatic caliber 30110 with a 42-hour power reserve and is water resistant to 120 m. It is no longer in production.
Specifications
Case
- Reference
- IW323904
- Collection
- Ingenieur
- Case size
- 39 mm
- Thickness
- 9.9 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 120 m
- Bracelet / strap
- Stainless steel
Dial and bezel
- Dial
- Silver
Movement
- Movement
- Automatic
- Caliber
- 30110
- Power reserve
- 42 hours
- Frequency
- 28,800 vph
- Jewels
- 21
Production
- Production
- Discontinued
Dial versions
This reference was made with these dials and finishes.
IW323904 Silver
Silver
How it compares within the Ingenieur family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| IW323904 (This watch) | 39 mm | Stainless steel | Silver | 30110 | — |
| IW324907 | 35.1 mm | Stainless steel | Blue | 47110 | 2026– |
| IW328901 | 40 mm | Stainless steel | Black | 32111 | 2023– |
| IW328902 | 40 mm | Stainless steel | Silver | 32111 | 2023– |
| IW328903 | 40 mm | Stainless steel | Aqua blue | 32111 | 2023– |
| IW328907 | 40 mm | Stainless steel | Blue | 32111 | 2023– |
| IW328908 | 40 mm | Stainless steel | Green | 32111 | 2023– |
| IW338902 | 42 mm | Ceramic (dark olive green) | Green | 82110 | — |
| IW338903 | 42 mm | Ceramic | Black | 82110 | — |
About the Ingenieur family
The Ingenieur was introduced in 1955 with ref. 666, an automatic watch protected against magnetic fields by a soft-iron inner case. In 1976 Gérald Genta redesigned it as the Ingenieur SL ref. 1832, with an integrated bracelet and a bezel with five recesses.
In 2023 IWC returned to the Genta design with the Ingenieur Automatic 40, ref. IW328901, with caliber 32111 and a grid-patterned dial. The catalog also lists earlier models with calibers such as 80110 and 30110 and ceramic versions. Dealers separate the generations by case design and reference and check the bracelet.
Quick answers
- What size is the IWC Ingenieur Automatic IW323904?
- The IWC Ingenieur Automatic IW323904 has a 39 mm case, 9.9 mm thick.
- What movement does the IWC Ingenieur Automatic IW323904 use?
- It uses the automatic caliber 30110, with a 42-hour power reserve.
- How water resistant is the IWC Ingenieur Automatic IW323904?
- It is water resistant to 120 metres.
- Is the IWC Ingenieur Automatic IW323904 still in production?
- Discontinued.
- What is the IWC Ingenieur Automatic IW323904 made of?
- The case is stainless steel. Bracelet or strap: Stainless steel.
Catalog facts checked October 2026.