Seiko Cal. 6678 - 256

Seiko 6678-256

The 6678-256 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6678 caliber with 32j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-9bbbb9e7be50]

Also known as: Monster, Arnie

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
39mm
Case Thickness
11.1mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
32j
Frequency
28,800 bph
Power Reserve
64 hours
Year
1998

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