Seiko Cal. 6681 - 139

The Seiko 6681-139 represents an important milestone in Seiko's 1968 lineup. Powered by the 6681 caliber with 25j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-191eba3b4a8b]

Also known as: Navigator

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1968

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