Seiko Cal. 7131 - 659

This Hand-Winding model from 1987 features a 44mm Titanium case. It features a Burgundy dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-e6b815560af2]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1987

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