Seiko Cal. 6639 - 910

The Seiko 6639-910 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-87cb6a363313]

Also known as: Shogun, UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1968

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