The Homo Sapiens Florentine Hills edition is the newest version of the Homo Sapiens Crystal line, a unique collection of demonstrators with acrylic barrels that show off the inner workings of the pens. The body is swirled with ribbons of colored celluloid shavings suspended in the clear acrylic barrel, as well as the semi-translucent green resin cap, grip, and plunger end. The demonstrator style gives the user a window into Visconti's patented Double Reservoir Power Filling system technology, made from titanium for extra durability, reliable function, and complete corrosion resistance from any ink formula. The push-pull plunger mechanism is easy to operate, and can be engaged when the back cap is unscrewed from the barrel end.