Seiko Cal. 6691 - 691

The Seiko 6691-691 represents an important milestone in Seiko's 1978 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-08d572db21a9]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1978

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