Seiko Cal. 5638 - 403

Released in 1993, the Cal. 5638 with design code 403 was part of Seiko's domestic market collection. Powered by the 5638 caliber with 30j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-b17da71597cf]

Also known as: Turtle, World Timer

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1993

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