Seiko Cal. 5638 - 298

The 5638-298 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5638 caliber with 25j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-bf1278b3057a]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1977

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