Seiko Cal. 6388 - 989

The Seiko 6388-989 represents an important milestone in Seiko's 1973 lineup. Powered by the 6388 caliber with 18j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-59a8684bae38]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1973

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