Seiko Cal. 6688 - 864

The Seiko 6688-864 represents an important milestone in Seiko's 1987 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-09b8a35ac8e9]

Also known as: Sumo, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1987

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