Seiko Cal. 6643 - 122

The Seiko 6643-122 represents an important milestone in Seiko's 1997 lineup. Powered by the 6643 caliber with 18j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-2f22e6c5fe13]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1997

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