Seiko Cal. 6640 - 796

The Seiko 6640-796 represents an important milestone in Seiko's 1998 lineup. With its 22mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-a542ee56c0e7]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1998

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