Seiko Cal. 5633 - 730

The 5633-730 is a sought-after Spring Drive piece from Seiko's golden era. With its 22mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-a9bc0ccae503]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1987

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