Seiko Cal. 6646 - 698

This Quartz model from 1971 features a 41mm Stainless Steel case. With its 18mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-75598e23f89c]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1971

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