Seiko Cal. 5647 - 705

The Seiko 5647-705 represents an important milestone in Seiko's 1977 lineup. With its 19mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-6d75adf1e7f0]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1977

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