Seiko Cal. 6178 - 656

The 6178-656 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6178 caliber with 25j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-9ddb76712ceb]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1967

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