Seiko Cal. 5633 - 999

The 5633-999 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-90fa2c278620]

Also known as: Bullhead, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1978

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