Seiko Cal. 0723 - 147

The Seiko 0723-147 represents an important milestone in Seiko's 1971 lineup. With its 21mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-cabf6bf58b1b]

Also known as: Sumo, Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1971

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