Seiko Cal. 5640 - 387

The 5640-387 is a sought-after Kinetic piece from Seiko's golden era. With its 19mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-7c82369c3665]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1973

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