Seiko Cal. 7181 - 531

The Seiko 7181-531 represents an important milestone in Seiko's 1980 lineup. It features a Green dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-fd212e8f92fa]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1980

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