Seiko Cal. 6657 - 889

Seiko 6657-889

The Seiko 6657-889 represents an important milestone in Seiko's 1979 lineup. Powered by the 6657 caliber with 32j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-f8945535fa5f]

Also known as: Monster, Sea Horse

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
40mm
Case Thickness
14.9mm
Lug Width
21mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
60m
Dial Color
Navy
Jewels
32j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1979

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