Seiko Cal. 6640 - 803

The Seiko 6640-803 represents an important milestone in Seiko's 1980 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-cd53df6c5d8a]

Also known as: Shogun, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1980

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