Grand Seiko 4520-7020

The Grand Seiko 4520-7020 is a Hi-Beat manual wind watch of the 45GS family.

This watch was not for sale, and never appeared in an official Seiko catalog.

4520-7020
4520-7020
Stainless Steel
Ref.
Case-movement ref.4520-7020
Year?
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 code4520-7020
Technical infoJapanese
Catalogs