Seiko Cal. 6657 - 945

The Seiko 6657-945 represents an important milestone in Seiko's 1972 lineup. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-7b6868ce38b1]

Also known as: Monster, Rally

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1972

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