Seiko Cal. 6643 - 189

The Seiko 6643-189 represents an important milestone in Seiko's 1970 lineup. Powered by the 6643 caliber with 19j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-0a663ec26188]

Also known as: Silverwave, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1970

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