Seiko Cal. 6328 - 647

The Seiko 6328-647 represents an important milestone in Seiko's 1969 lineup. Powered by the 6328 caliber with 21j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-d26a3de2face]

Also known as: Navigator, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Navy

Jewels

21j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1969

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