Seiko Cal. 5637 - 681

This Spring Drive model from 1974 features a 45mm Titanium case. It features a Silver dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-976226b9c63f]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

34j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1974

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