Seiko Cal. 6397 - 940

This Spring Drive model from 1988 features a 43mm Gold-Plated case. Powered by the 6397 caliber with 26j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-ae2bec3b2394]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

26j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1988

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