Grand Seiko 4520-7010

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).

4520-7010
4520-7010 (45GS 040)
Stainless Steel
Ref.45GS 040
Case-movement ref.4520-7010
Year1970
Caliber4520A
Jewels25
Bph36,000
TypeHi-Beat Manual Wind
Family45GS
BranchDaini Seikosha
MaterialStainless Steel
CrystalHardlex
SizeDiameter: 36.5 mm
Lug width: 18 mm
Complications
HackingYes
Dial codeJAPAN 4520-7010T
Technical infoJapanese
Catalogs1970 vol. 2
1971 vol. 1
1971 vol. 2