| Model | Tank Française SM / 18K YG |
| Reference | 1820 |
| Year of Production | 1990's |
| Movement | Quartz (battery operated Cal.018B) |
| Country of Origin | Switzerland |
| Water Resistance | Daily life waterproof |
| Case Diameter | 23mm |
| Case Material | 18k yellow gold |
| Crystal | sapphire crystal |
| Lug Width | 15mm |
| Buckle Width | 14mm |