Seiko Cal. 4538 - 373

The 4538-373 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4538 caliber with 32j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-3b359e6025a2]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

White

Jewels

32j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1989

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