Seiko Cal. 6644 - 921

The 6644-921 is a sought-after Spring Drive piece from Seiko's golden era. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-dbdeb526ae70]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

21j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1983

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