Seiko Cal. 5639 - 909

The Seiko 5639-909 represents an important milestone in Seiko's 1986 lineup. With its 20mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-8bfb486db917]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1986

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