Seiko Cal. 6657 - 831

The Seiko 6657-831 represents an important milestone in Seiko's 1991 lineup. It features a Champagne dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-731d770620ba]

Also known as: Monster, Goldfeather

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1991

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