Seiko Cal. 4521 - 641

Seiko 4521-641

This Spring Drive model from 1971 features a 46mm Stainless Steel case. Powered by the 4521 caliber with 23j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-02f954d9fcbe]

Also known as: Silverwave, Flighty

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
14.3mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
140m
Dial Color
Navy
Jewels
23j
Frequency
21,600 bph
Power Reserve
41 hours
Year
1971

Related Models

seikata-wm-02f954d9fcbe