Seiko Cal. 6659 - 378

Seiko 6659-378

Released in 1978, the Cal. 6659 with design code 378 was part of Seiko's domestic market collection. Powered by the 6659 caliber with 33j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-f2a908dbe684]

Also known as: Monster, Rally

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
42mm
Case Thickness
8.0mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
36,000 bph
Power Reserve
66 hours
Year
1978

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