Seiko Cal. 5639 - 241

The Seiko 5639-241 represents an important milestone in Seiko's 1967 lineup. With its 20mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-c1ec2f7cc38e]

Also known as: Panda, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1967

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