Seiko Cal. 5639 - 811

Released in 1987, the Cal. 5639 with design code 811 was part of Seiko's domestic market collection. With its 21mm lug width and 11.7mm profile, it sits comfortably on most wrists. [seikata-wm-be5b7dfe5aac]

Also known as: Rally, Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

11.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1987

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