Seiko Cal. 6657 - 328

This Quartz model from 1972 features a 41mm PVD Black case. With its 21mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-192b910e31f6]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1972

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