Seiko Cal. 4421 - 688

The Seiko 4421-688 represents an important milestone in Seiko's 1990 lineup. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-e22224eb304a]

Also known as: Bullhead, UFO

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1990

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