Seiko Cal. 6643 - 919

The Seiko 6643-919 represents an important milestone in Seiko's 1969 lineup. With its 21mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-6cabce6159ec]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1969

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