Seiko Cal. 6657 - 779

The Seiko 6657-779 represents an important milestone in Seiko's 1987 lineup. Powered by the 6657 caliber with 31j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-ce3a61564377]

Also known as: Monster, Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Champagne

Jewels

31j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1987

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