Seiko Cal. 5638 - 778

This Quartz model from 1987 features a 43mm Two-Tone case. Powered by the 5638 caliber with 26j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-8306cb1f9696]

Also known as: World Timer

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1987

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