Seiko Cal. 5677 - 138

Released in 1975, the Cal. 5677 with design code 138 was part of Seiko's domestic market collection. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-fce12ce58baa]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1975

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