Seiko Cal. 7131 - 127

This Hand-Winding model from 1977 features a 40mm Titanium case. It features a Champagne dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-439ec958653a]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1977

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