Seiko Cal. 6644 - 501

Released in 1977, the Cal. 6644 with design code 501 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-b7bf1fb33fb9]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1977

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