Seiko Cal. 6647 - 724

The 6647-724 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-1c6ef32c4582]

Also known as: Crown, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1971

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