Seiko Cal. 0731 - 838

This Hand-Winding model from 1974 features a 40mm Two-Tone case. It features a Champagne dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-0024eb71eca8]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1974

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