Seiko Cal. 6643 - 280

The Seiko 6643-280 represents an important milestone in Seiko's 1986 lineup. It features a Cream dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-26f38a14f22f]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1986

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