Seiko Cal. 6637 - 528

This Spring Drive model from 1973 features a 38mm Two-Tone case. It features a Silver dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-7215693fef4d]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1973

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