Seiko Cal. 5639 - 664

The Seiko 5639-664 represents an important milestone in Seiko's 1974 lineup. Powered by the 5639 caliber with 30j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-9bfb6aa5ccbf]

Also known as: Samurai, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1974

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