Seiko Cal. 0788 - 631

The Seiko 0788-631 represents an important milestone in Seiko's 1983 lineup. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-e1f0e5952eff]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1983

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