Seiko Cal. 7131 - 131

Released in 1977, the Cal. 7131 with design code 131 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-a17def015946]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1977

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