Seiko Cal. 6648 - 418

The Seiko 6648-418 represents an important milestone in Seiko's 1990 lineup. With its 18mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-513a9368abde]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1990

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