Seiko Cal. 5668 - 636

The Seiko 5668-636 represents an important milestone in Seiko's 1986 lineup. Powered by the 5668 caliber with 21j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-ba0bac7f96e1]

Also known as: Navigator, Flighty

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

200m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1986

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