Seiko Cal. 6390 - 748

The Seiko 6390-748 represents an important milestone in Seiko's 1968 lineup. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ac2e1c067210]

Also known as: Helmet, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1968

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