Seiko Cal. 7031 - 866

The Seiko 7031-866 represents an important milestone in Seiko's 1968 lineup. Powered by the 7031 caliber with 19j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-8c66a60c3983]

Also known as: Navigator, Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1968

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