Seiko Cal. 6657 - 423

The Seiko 6657-423 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-5d6722116d58]

Also known as: Shogun, Goldfeather

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1970

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