Seiko Cal. 6131 - 863

This Spring Drive model from 1965 features a 40mm Two-Tone case. It features a Navy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-559ca0b6caf3]

Also known as: Shogun, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1965

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