Seiko Cal. 5660 - 531

The Seiko 5660-531 represents an important milestone in Seiko's 1965 lineup. Powered by the 5660 caliber with 34j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-dec86176604f]

Also known as: Rally

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1965

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