The Nahvalur Original demonstrator fountain pen offers a captivating view of its piston-filling mechanism in action, allowing the writer to witness the graceful movement and the ink swirling within the crystal-clear barrel reservoir. Enhanced by a transparent resin body, this fountain pen exudes elegance, complemented by an art deco chrome clip and an engraved barrel band. Experience a heightened level of refined sophistication as the piston effortlessly glides, creating a mesmerizing display of ink dynamics within the reservoir. Specifications: Finish: Clear, transparent resin Trims and clip: Silver Nib: No. 6 stainless steel Filling system: Piston mechanism (bottled ink fill only) Fountain pen length, closed: 146.5 mm Fountain pen length, open, cap off: 133 mm Fountain pen length, open, cap posted: 176 mm Fountain pen diameter, barrel: 13.5 mm Fountain pen diameter, section: 10 mm - 11 mm Fountain pen total weight: 19.8 g Gift boxed with user guide, 1-year warranty, and metal piston wrench.