Seiko Cal. 5638 - 861

The Seiko 5638-861 represents an important milestone in Seiko's 1981 lineup. With its 19mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-044af4b260a4]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1981

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