Seiko Cal. 6644 - 738

Released in 1966, the Cal. 6644 with design code 738 was part of Seiko's domestic market collection. With its 21mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-fef445aa7231]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1966

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