IWC Portofino Chronograph
| Brand | IWC |
| Name | Portofino Chronograph |
| Reference | 3910-b |
| Diameter | 42 mm |
| Material | Stainless Steel Case, Leather Strap |
| Features | Chronograph, Date, Day of the Week, Water resistant to 100 ft |
| Movement | Automatic Self-Winding Mechanical |
