Seiko Cal. 5639 - 641

The Seiko 5639-641 represents an important milestone in Seiko's 1967 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-76fa079b71c6]

Also known as: Bellmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1967

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