| Model | GrandSeiko 1st |
| Reference | J14070GS |
| Year of Production | February 1961 |
| Movement | Manual winding (Cal.3180) |
| Country of Origin | Japan |
| Water Resistance | non-waterproof |
| Case Diameter | 35mm |
| Case Material | K14 Yellow Gold Field (14K gold plated) |
| Crystal | plastic |
| Lug Width | 18mm |
| Buckle Width | 15mm |