Seiko Cal. 5689 - 631

This Spring Drive model from 1985 features a 39mm Two-Tone case. With its 22mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-37b20853b42e]

Also known as: Navigator, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

39mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1985

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