Seiko Cal. 4597 - 138

The Seiko 4597-138 represents an important milestone in Seiko's 1966 lineup. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-fedc42e2ee5c]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1966

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