Seiko Cal. 6634 - 434

This Spring Drive model from 1974 features a 42mm PVD Black case. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-f22cfbefedbe]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Champagne

Jewels

24j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1974

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