Seiko Cal. 5690 - 406

The Seiko 5690-406 represents an important milestone in Seiko's 1991 lineup. With its 21mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-e741431aa659]

Also known as: Sumo, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

36j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1991

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