Seiko Cal. 4528 - 321

This Spring Drive model from 1975 features a 34mm Stainless Steel case. Powered by the 4528 caliber with 34j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-268da6553111]

Also known as: Navigator, Crown

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1975

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