Seiko Cal. 6638 - 553

This Kinetic model from 1965 features a 38mm PVD Black case. Powered by the 6638 caliber with 33j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-c14dc41bc992]

Also known as: Sumo, World Timer

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

33j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1965

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