| Model | Seamaster Date Square case Two-tone dial |
| Reference | 166.042 |
| Year of Production | 1969 |
| Movement | Automatic winding (Cal.565) |
| Country of Origin | Switzerland |
| Water Resistance | non-waterproof |
| Case Diameter | 34mm |
| Case Material | Stainless steel |
| Crystal | plastic |
| Lug Width | 20mm |
| Buckle Width | 17mm |