Seiko Cal. 6636 - 866

Released in 1969, the Cal. 6636 with design code 866 was part of Seiko's domestic market collection. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-df37cddc3773]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

17j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1969

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