Seiko Cal. 6634 - 584

This Spring Drive model from 1975 features a 40mm PVD Black case. It features a White dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-e7a17b4a642d]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1975

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