Seiko Cal. 5666 - 978

The Seiko 5666-978 represents an important milestone in Seiko's 1976 lineup. The Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-e673ab72bd49]

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

50m

Dial Color

Cream

Jewels

32j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1976

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