Seiko Cal. 6678 - 581

Released in 1967, the Cal. 6678 with design code 581 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-3518e01ea913]

Also known as: Monster, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1967

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