Seiko Cal. 5633 - 987

Released in 1988, the Cal. 5633 with design code 987 was part of Seiko's domestic market collection. With its 19mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-bf1ef4d82cb8]

Also known as: UFO, Navigator

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1988

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