| Model | Tank Obus SM K18 yellow gold with box |
| Reference | 1603 2 |
| Year of Production | 1990's |
| Movement | Quartz (battery operated) |
| Country of Origin | Switzerland |
| Water Resistance | Life waterproofing |
| Case Diameter | 24mm |
| Case Material | 18k yellow gold |
| Crystal | mineral glass |
| Lug Width | 16mm |
| Buckle Width | 14mm |