Seiko Cal. 4531 - 138

The Seiko 4531-138 represents an important milestone in Seiko's 1982 lineup. It features a Green dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-dcfae5ee43b5]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1982

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