Seiko Cal. 6388 - 669

The Seiko 6388-669 represents an important milestone in Seiko's 1982 lineup. Powered by the 6388 caliber with 24j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-4b2286038036]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1982

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