Seiko Cal. 6678 - 422

The 6678-422 is a sought-after Solar piece from Seiko's golden era. Powered by the 6678 caliber with 20j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-77251e8aa26b]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

20j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1966

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