Seiko Cal. 4521 - 485

The Seiko 4521-485 represents an important milestone in Seiko's 1980 lineup. Powered by the 4521 caliber with 20j jewels beating at 28,800 bph, it delivers a 56 hours power reserve. [seikata-wm-940c0249ffa5]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

43mm

Case Thickness

12.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1980

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