Seiko Cal. 7131 - 187

The Seiko 7131-187 represents an important milestone in Seiko's 1970 lineup. It features a Silver dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-d1e077a44e37]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1970

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