Seiko Cal. 4521 - 513

The Seiko 4521-513 represents an important milestone in Seiko's 1981 lineup. Powered by the 4521 caliber with 26j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-329aacbad844]

Also known as: Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

12.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1981

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