Seiko Cal. 5660 - 900

This Spring Drive model from 1967 features a 41mm Stainless Steel case. With its 20mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-5f749bf37a63]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1967

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