Seiko Cal. 5639 - 924

The Seiko 5639-924 represents an important milestone in Seiko's 1971 lineup. The Inner Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-e7d0bd430209]

Also known as: Monster, Panda

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1971

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