Seiko Cal. 4528 - 957

This Spring Drive model from 1966 features a 37mm Stainless Steel case. It features a Burgundy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-3a8fa570e61a]

Also known as: Monster, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1966

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