Seiko Cal. 4531 - 231

The Seiko 4531-231 represents an important milestone in Seiko's 1996 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-7fbe5cc6afa2]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1996

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