Seiko Cal. 6648 - 731

The Seiko 6648-731 represents an important milestone in Seiko's 1979 lineup. With its 18mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-43b0000ef3be]

Also known as: Pogue, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1979

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