Seiko Cal. 6690 - 648

The Seiko 6690-648 represents an important milestone in Seiko's 1977 lineup. It features a Silver dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-677cd22a483f]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

11.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1977

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