Seiko Cal. 6678 - 754

The 6678-754 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6678 caliber with 18j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-576b6e51be72]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

18j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1996

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