Seiko Cal. 6668 - 399

The 6668-399 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6668 caliber with 26j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-3114288b1e6a]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1968

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