Seiko Cal. 0731 - 669

This Automatic model from 1965 features a 39mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-63580051bdff]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Silver

Jewels

36j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1965

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