Seiko Cal. 7131 - 771

The Seiko 7131-771 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-5a25106ba8de]

Also known as: Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1971

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