Seiko Cal. 6397 - 870

This Kinetic model from 1971 features a 40mm PVD Black case. Powered by the 6397 caliber with 27j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-d6374579aaf3]

Also known as: Helmet

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1971

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