Seiko Cal. 5633 - 930

The Seiko 5633-930 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-e375c54e86eb]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1965

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