Seiko Cal. 5640 - 583

Released in 1995, the Cal. 5640 with design code 583 was part of Seiko's domestic market collection. With its 19mm lug width and 8.8mm profile, it sits comfortably on most wrists. [seikata-wm-f2a3cf8afd9e]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1995

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