Seiko Cal. 5683 - 431

The Seiko 5683-431 represents an important milestone in Seiko's 1977 lineup. With its 22mm lug width and 11.8mm profile, it sits comfortably on most wrists. [seikata-wm-14a9608aa7f4]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1977

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