Seiko Cal. 5240 - 390

The Seiko 5240-390 represents an important milestone in Seiko's 1989 lineup. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-2c5f58bb90dd]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1989

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