Seiko Cal. 4527 - 412

This Spring Drive model from 1970 features a 34mm Titanium case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-ff60b3c5f9e3]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1970

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