Seiko Cal. 6640 - 479

Released in 1970, the Cal. 6640 with design code 479 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-7a11bf247aa5]

Also known as: Turtle, Goldfeather

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

17j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1970

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