Seiko Cal. 6638 - 450

This Spring Drive model from 1974 features a 36mm Gold-Plated case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-af6b05c0b776]

Also known as: Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1974

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