Seiko Cal. 6648 - 228

The Seiko 6648-228 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-50b672910fdf]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1979

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