Seiko Cal. 6390 - 268

The 6390-268 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6390 caliber with 28j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-a390983ce119]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1978

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