Seiko Cal. 4531 - 528

This Spring Drive model from 1971 features a 38mm Titanium case. It features a Cream dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-1e61897f3efa]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

24j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1971

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