Seiko Cal. 6660 - 631

The Seiko 6660-631 represents an important milestone in Seiko's 1997 lineup. With its 20mm lug width and 14.8mm profile, it sits comfortably on most wrists. [seikata-wm-bc11f13f2606]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1997

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