Seiko Cal. 5660 - 657

This Spring Drive model from 1966 features a 43mm Stainless Steel case. Powered by the 5660 caliber with 32j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-a852a8718034]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1966

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