Seiko Cal. 7131 - 780

This Hand-Winding model from 1977 features a 41mm Titanium case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-226befeeb396]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1977

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