Seiko Cal. 5691 - 603

The Seiko 5691-603 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-afac961fa441]

Also known as: Monster, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1988

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