Seiko Cal. 6657 - 404

The Seiko 6657-404 represents an important milestone in Seiko's 1974 lineup. With its 19mm lug width and 12.4mm profile, it sits comfortably on most wrists. [seikata-wm-c0a5efe33437]

Also known as: Sumo, Panda

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1974

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