Seiko Cal. 6640 - 589

The Seiko 6640-589 represents an important milestone in Seiko's 1987 lineup. With its 22mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-c3f8bd5b3c25]

Also known as: Rally, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1987

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