Seiko Cal. 5639 - 531

Released in 1987, the Cal. 5639 with design code 531 was part of Seiko's domestic market collection. It features a Cream dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-3f5e35cab124]

Also known as: Turtle, Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1987

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