Seiko Cal. 4528 - 636

The Seiko 4528-636 represents an important milestone in Seiko's 1977 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-198ff97ede67]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1977

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