Seiko Cal. 6131 - 606

This Hand-Winding model from 1995 features a 40mm Titanium case. With its 20mm lug width and 8.9mm profile, it sits comfortably on most wrists. [seikata-wm-1a04cab01568]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1995

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