| IWC Watch Index | Internet Wristwatch Index | How to regulate mechanical watches |
All Portofino Chronograph watches:
|
| plt = platinum, y = yellow, p = pink, w = white, PR = power reserve, thickness = height |
| Case | Dial | Diameter (mm) |
height (mm) |
Bracelet | Calibre | Model Number |
| steel | silver | 41 | 13.5 | leather | 79320 | IW378302 |
| steel | black | 41 | 13.5 | leather | 79320 | IW378303 |