Seiko Cal. 5284 - 640

The Seiko 5284-640 represents an important milestone in Seiko's 1987 lineup. With its 21mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-7704c0d17828]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

32j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1987

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