Seiko Cal. 4548 - 961

This Spring Drive model from 1972 features a 35mm PVD Black case. With its 21mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-d1a89651aa81]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1972

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