Seiko Cal. 5638 - 872

The Seiko 5638-872 represents an important milestone in Seiko's 1984 lineup. Powered by the 5638 caliber with 24j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-0bcc8b5d1383]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1984

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