Seiko Cal. 6397 - 256

This Kinetic model from 1977 features a 43mm Stainless Steel case. It features a Black dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-b47bd2384ef2]

Also known as: Bullhead, Helmet

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

30j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1977

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