Sinn 657 Strap
| Brand | Sinn |
| Name | 657 Strap |
| Diameter | 39 mm |
| Material | Stainless Steel Case, Leather Strap |
| Features | Date, Central Seconds Hand, Water resistant ≥ 600 ft, External rotating bezel |
| Movement | Automatic Self-Winding Mechanical |
| Price | About $1,177 France - about €850 |
