Seiko Cal. 6690 - 898

The Seiko 6690-898 represents an important milestone in Seiko's 1986 lineup. With its 21mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-e1f3c529f0bd]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1986

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