Seiko Cal. 7131 - 280

The Seiko 7131-280 represents an important milestone in Seiko's 1969 lineup. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-22528d9fd879]

Also known as: Crown, Flighty

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1969

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