Seiko Cal. 5633 - 855

The 5633-855 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-88ba27d0e9d6]

Also known as: Bullhead, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1989

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