Seiko Cal. 5639 - 413

The Seiko 5639-413 represents an important milestone in Seiko's 1996 lineup. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-53f391856dc8]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

10.7mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1996

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