Seiko Cal. 4552 - 688

This Spring Drive model from 1972 features a 46mm Hardlex-Coated Steel case. With its 20mm lug width and 10.3mm profile, it sits comfortably on most wrists. [seikata-wm-a56f041f15d4]

Also known as: Sumo, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

33j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1972

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