1987-seiko-catalog-v2-jp, page 37
5P31-6120
reference5P31-6120
collection—
caliber5P31
year1987
movementQuartz
dial colourGrey
case colourSilver
case shapeRound
strapBracelet
jewels—
movement descanalog quartz
movement typequartz
sub brandsSpirit, Cadet Battery