Seiko Cal. 6678 - 523

The Seiko 6678-523 represents an important milestone in Seiko's 1975 lineup. Powered by the 6678 caliber with 34j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-9e59fcadc8d2]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1975

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