Seiko Cal. 5639 - 448

The Seiko 5639-448 represents an important milestone in Seiko's 1969 lineup. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-6b0495dca68d]

Also known as: World Timer

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

26j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1969

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