Seiko Cal. 6689 - 653

Released in 1971, the Cal. 6689 with design code 653 was part of Seiko's domestic market collection. With its 20mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-aa5db6c7d402]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1971

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