Seiko Cal. 5639 - 444

The Seiko 5639-444 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-63b5b18722cd]

Also known as: Panda, Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1969

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