Seiko Cal. 6638 - 907

The Seiko 6638-907 represents an important milestone in Seiko's 1982 lineup. The Fixed bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-ff9b9a1a0269]

Also known as: Crown, Golden Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

38mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1982

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