Seiko Cal. 6641 - 166

This Quartz model from 1975 features a 41mm Gold-Plated case. With its 21mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-a3c2eefaed61]

Also known as: Sumo, Helmet

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

19j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1975

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