Seiko Cal. 5684 - 290

The Seiko 5684-290 represents an important milestone in Seiko's 1978 lineup. With its 21mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-ffd171fe4e40]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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