Seiko Cal. 5639 - 670

Released in 1995, the Cal. 5639 with design code 670 was part of Seiko's domestic market collection. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-f9da5ceeabf8]

Also known as: Rally, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1995

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