Seiko Cal. 6331 - 389

This Hand-Winding model from 1979 features a 45mm Two-Tone case. With its 20mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-b4ca721b45b2]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1979

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