Seiko Cal. 5668 - 678

Released in 1981, the Cal. 5668 with design code 678 was part of Seiko's domestic market collection. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-9fbbc02ead50]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1981

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