Seiko Cal. 7131 - 999

This Automatic model from 1981 features a 43mm Stainless Steel case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ad1e01e48f0b]

Also known as: Monster, Sea Horse

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

23j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1981

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