Seiko Cal. 6390 - 722

The Seiko 6390-722 represents an important milestone in Seiko's 1977 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-fb639c1527de]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1977

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