The Grand Seiko 4520-7010 (ref. 45GS 040) is a Hi-Beat manual wind watch of the 45GS family. Although there is only one version of this reference presented in the Seiko JDM catalogs, there is a relatively common variant of the dial, without 36000 written under Hi-Beat.
The first appearance in the official Seiko catalogs is in the second volume of 1970, while the last appearance is in the second volume of 1971.
There is a date version of this watch, with reference 4522-7010 (45GSC 040).
Ref. | 45GS 040 |
Case-movement ref. | 4520-7010 |
Year | 1970 |
Caliber | 4520A |
Jewels | 25 |
Bph | 36,000 |
Type | Hi-Beat Manual Wind |
Family | 45GS |
Branch | Daini Seikosha |
Material | Stainless Steel |
Crystal | Hardlex |
Size | Diameter: 36.5 mm Lug width: 18 mm |
Complications | – |
Hacking | Yes |
Dial code | JAPAN 4520-7010T |
Technical info | Japanese |
Catalogs | 1970 vol. 2 1971 vol. 1 1971 vol. 2 |