| Brand | Nomos |
| Name | Tangomat GMT Plus |
| Reference | 637 |
| Diameter | 40 mm |
| Material | Stainless Steel Case, Leather Strap |
| Features | No date, GMT, Small Seconds, Water resistant to 100 ft, Other |
| Movement | Automatic Self-Winding Mechanical |
| Price | About $4,100 France - about €2,960 |