Seiko Cal. 4521 - 881

This Spring Drive model from 1966 features a 38mm Stainless Steel case. Powered by the 4521 caliber with 32j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-713f89bf14ac]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1966

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