Seiko Cal. 6397 - 318

The Seiko 6397-318 represents an important milestone in Seiko's 1973 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3940bb042b4b]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1973

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