Seiko Cal. 5663 - 831

The Seiko 5663-831 represents an important milestone in Seiko's 1983 lineup. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b3afbe4c422f]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

29j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1983

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