Seiko Cal. 5640 - 587

The 5640-587 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-4d162e880aaf]

Also known as: Rally, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1986

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