Seiko Cal. 5660 - 450

The Seiko 5660-450 represents an important milestone in Seiko's 1976 lineup. Powered by the 5660 caliber with 33j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-0091a09037c3]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

30m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1976

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