Seiko Cal. 6638 - 902

This Spring Drive model from 1967 features a 41mm Two-Tone case. It features a White dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-d335217dd6cb]

Also known as: Pogue, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1967

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