Seiko Cal. 6377 - 648

This Quartz model from 1975 features a 37mm PVD Black case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-22df46af9b1a]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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