Seiko Cal. 5691 - 554

The Seiko 5691-554 represents an important milestone in Seiko's 1989 lineup. With its 20mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-70721b3f987c]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1989

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