Seiko Cal. 5639 - 164

The Seiko 5639-164 represents an important milestone in Seiko's 1976 lineup. It features a White dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-e899e6695ef7]

Also known as: Rally, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1976

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