Seiko Cal. 5634 - 439

The Seiko 5634-439 represents an important milestone in Seiko's 1981 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-22076aa4d0ea]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1981

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