Seiko Cal. 4528 - 691

The Seiko 4528-691 represents an important milestone in Seiko's 1992 lineup. It features a Black dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-8db1cfbdc4c4]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1992

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