Seiko Cal. 6639 - 729

This Spring Drive model from 1972 features a 36mm Stainless Steel case. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-823895d2fd31]

Also known as: Panda, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1972

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