Seiko Cal. 5621 - 398

The Seiko 5621-398 represents an important milestone in Seiko's 1966 lineup. Powered by the 5621 caliber with 22j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-69ba84e3af45]

Also known as: Sumo, Rally

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

40mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1966

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