Seiko Cal. 4531 - 360

This Hand-Winding model from 1971 features a 45mm Stainless Steel case. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-2d3943a5f7df]

Also known as: Bullhead, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1971

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