Seiko Cal. 5638 - 879

The 5638-879 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-d34303c39564]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1973

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