Seiko Cal. 6647 - 866

Released in 1965, the Cal. 6647 with design code 866 was part of Seiko's domestic market collection. It features a White dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-54cc2dee7f7c]

Also known as: Rally, Navigator

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

29j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1965

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