Seiko Cal. 6657 - 188

The Seiko 6657-188 represents an important milestone in Seiko's 1984 lineup. With its 18mm lug width and 9.5mm profile, it sits comfortably on most wrists. [seikata-wm-157348270351]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Green

Jewels

29j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1984

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