Seiko Cal. 6331 - 320

Seiko 6331-320

This Automatic model from 1978 features a 43mm Titanium case. With its 22mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-fb3872d21604]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
43mm
Case Thickness
13.2mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Green
Jewels
29j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1978

Related Models

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