Seiko Cal. 6677 - 147

This Spring Drive model from 1987 features a 37mm PVD Black case. It features a Green dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-63ce566fc128]

Also known as: Monster, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1987

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