Seiko Cal. 6644 - 339

Released in 1981, the Cal. 6644 with design code 339 was part of Seiko's domestic market collection. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-0f56bde87ebf]

Also known as: World Timer

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

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