Seiko Cal. 4521 - 813

The Seiko 4521-813 represents an important milestone in Seiko's 1969 lineup. Powered by the 4521 caliber with 29j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-85823326d665]

Also known as: Monster, Goldfeather

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

37mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1969

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