Seiko Cal. 6643 - 444

The Seiko 6643-444 represents an important milestone in Seiko's 1999 lineup. Powered by the 6643 caliber with 19j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-32d2bda7d03d]

Also known as: Tuna, Arnie

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1999

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