Seiko Cal. 5638 - 268

This Quartz model from 1969 features a 36mm Two-Tone case. Powered by the 5638 caliber with 26j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-b15d6b1f45e3]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1969

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