Seiko Cal. 6147 - 731

This Spring Drive model from 1975 features a 35mm PVD Black case. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-597a3b8047c4]

Also known as: Golden Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

27j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1975

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