Seiko Cal. 6397 - 530

This Spring Drive model from 1969 features a 39mm PVD Black case. Powered by the 6397 caliber with 27j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-213f75db0805]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1969

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