Seiko Cal. 0730 - 666

The Seiko 0730-666 represents an important milestone in Seiko's 1980 lineup. Powered by the 0730 caliber with 17j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-b660c1d7c73c]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1980

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