Seiko Cal. 4531 - 660

This Automatic model from 1969 features a 40mm Stainless Steel case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-dcc5acc0ce93]

Also known as: Monster, Silverwave

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1969

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