Seiko Cal. 6643 - 991

Released in 1992, the Cal. 6643 with design code 991 was part of Seiko's domestic market collection. With its 22mm lug width and 13.0mm profile, it sits comfortably on most wrists. [seikata-wm-39fbdd1afc45]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1992

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