Seiko Cal. 6390 - 637

This Hand-Winding model from 1979 features a 34mm Stainless Steel case. It features a Champagne dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-0bbf24f8fc6a]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

32j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1979

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