Seiko Cal. 5633 - 405

The Seiko 5633-405 represents an important milestone in Seiko's 1991 lineup. With its 18mm lug width and 12.8mm profile, it sits comfortably on most wrists. [seikata-wm-2931ea41e73b]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

18j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1991

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