Seiko Cal. 6689 - 401

The Seiko 6689-401 represents an important milestone in Seiko's 1979 lineup. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-5841dd3b5b59]

Also known as: Sumo, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1979

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