Seiko Cal. 7031 - 431

The Seiko 7031-431 represents an important milestone in Seiko's 1982 lineup. With its 20mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-48214b32f316]

Also known as: Samurai, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Cream

Jewels

29j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1982

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