Seiko Cal. 6657 - 304

The Seiko 6657-304 represents an important milestone in Seiko's 1973 lineup. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-118556aeec80]

Also known as: Pogue

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1973

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