Seiko Cal. 4520 - 660

The Seiko 4520-660 represents an important milestone in Seiko's 1971 lineup. Powered by the 4520 caliber with 29j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-7ef52b7bd9e5]

Also known as: Sea Horse, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1971

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