Seiko Cal. 6678 - 425

Seiko 6678-425

The 6678-425 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6678 caliber with 36j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-a6e301b303bf]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
38mm
Case Thickness
9.6mm
Lug Width
18mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
80m
Dial Color
Navy
Jewels
36j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1990

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