Seiko Cal. 6639 - 152

The Seiko 6639-152 represents an important milestone in Seiko's 1976 lineup. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-509a494605b1]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

23j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1976

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