Seiko Cal. 6390 - 403

The 6390-403 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6390 caliber with 30j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-bb64bd10bb09]

Also known as: Samurai

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1981

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