Seiko Cal. 5612 - 303

The Seiko 5612-303 represents an important milestone in Seiko's 1971 lineup. With its 21mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-9dd9e38ebb40]

Also known as: Sumo, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

160m

Dial Color

Black

Jewels

32j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1971

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