Seiko Cal. 5643 - 264

The Seiko 5643-264 represents an important milestone in Seiko's 1974 lineup. Powered by the 5643 caliber with 18j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-b38a561d550d]

Also known as: Sumo, Arnie

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1974

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