Seiko Cal. 6638 - 675

The Seiko 6638-675 represents an important milestone in Seiko's 1967 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-2b63d6fc1fa6]

Also known as: Monster, Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1967

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