Seiko Cal. 5698 - 537

The Seiko 5698-537 represents an important milestone in Seiko's 1977 lineup. With its 21mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-4d177695166d]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1977

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