Seiko Cal. 6647 - 800

Released in 1979, the Cal. 6647 with design code 800 was part of Seiko's domestic market collection. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-4e954ec0ba31]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1979

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