Seiko Cal. 5613 - 840

The Seiko 5613-840 represents an important milestone in Seiko's 1983 lineup. With its 18mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-ea29274f97ff]

Also known as: Helmet, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1983

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