Seiko Cal. 6397 - 350

The Seiko 6397-350 represents an important milestone in Seiko's 1975 lineup. With its 19mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-b38abdece372]

Also known as: Monster, Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1975

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