Seiko Cal. 6668 - 731

The Seiko 6668-731 represents an important milestone in Seiko's 1979 lineup. Powered by the 6668 caliber with 25j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-ce6a5a9d8117]

Also known as: Panda, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1979

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