Seiko Cal. 6678 - 730

The 6678-730 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6678 caliber with 20j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-791b9a222959]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1967

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