Seiko Cal. 4413 - 365

The Seiko 4413-365 represents an important milestone in Seiko's 1973 lineup. Powered by the 4413 caliber with 21j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-26b6200d3d8f]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1973

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