Seiko Cal. 6648 - 580

The Seiko 6648-580 represents an important milestone in Seiko's 1978 lineup. With its 18mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-3f5503aa7318]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1978

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