Seiko Cal. 5637 - 229

This Quartz model from 1972 features a 37mm PVD Black case. Powered by the 5637 caliber with 28j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-0cc8f2cd0491]

Also known as: Monster, Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

37mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

28j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1972

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