Seiko Cal. 7131 - 781

The Seiko 7131-781 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-bb4c43e0e9c1]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1981

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