Seiko Cal. 6397 - 859

The Seiko 6397-859 represents an important milestone in Seiko's 1980 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-63474b090f77]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1980

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