1 / 10Specifications
A concise reference view of the case, dial, bracelet and movement details buyers compare first.
Case
| Diameter | 41 mm |
|---|---|
| Thickness | 13 mm |
| Lug width | 20 mm |
| Material | Stainless steel |
| Caseback | See-Through |
| Crystal | Sapphire |
| Water resistance | 3 bar / 30 m |
| Water Resistance Category | Splash |
Reference details
| Gender | Men's |
|---|---|
| Production status | Discontinued |
| Origin | Switzerland |
| Warranty | 8 years |
| Size category | Large |
| Component count | 206 |
Dial and bracelet
| Dial | Red |
|---|---|
| Display | Analog |
| Bracelet | Leather |
| Bracelet material | Black calfskin strap |
| Strap material | Leather |
Movement
| Calibre | IWC Calibre 69355 |
|---|---|
| Calibre family | 69xxx |
| Movement | automatic |
| Power reserve | 46 hours |
| Frequency | 28,800 vph |
| Jewels | 27 jewels |
| Stop Seconds | Yes |
| In House Movement | Yes |
Additional details
| Buckle Width Mm | 18 |
|---|
Recent price movement
Tracking 7 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer.
About this reference
IW371629 makes the Portugieser Chronograph's colour the central point of its character. The red dial brings warmth and energy to the 41 mm stainless-steel case, while the black calfskin strap pulls the design back toward the collection's formal roots. A see-through back keeps the visual story balanced, revealing that the watch's expressive front is supported by a serious mechanical layout.
The in-house calibre 69355 uses automatic pawl winding and column-wheel chronograph control. Its 30 mm movement contains 205 components and 27 jewels, operates at 4 Hz, and stores 46 hours of power reserve. Small seconds complete the chronograph arrangement, while the 13 mm case thickness preserves the familiar Portugieser balance between a generous dial and a wearable profile.











