Seiko Cal. 6388 - 997

The Seiko 6388-997 represents an important milestone in Seiko's 1968 lineup. Powered by the 6388 caliber with 33j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-9dfa90fea820]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1968

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