Seiko Cal. 6390 - 920

This Automatic model from 1965 features a 36mm Hardlex-Coated Steel case. Powered by the 6390 caliber with 34j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-69c27c5ccc3d]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

34j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1965

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