Platinum Prefounte Fountain PenA beginner's fountain pen for adults Platinum Prefounte Fountain pen is equipped with the "Slip & Seal Mechanism" that prevents ink from drying out in the pen with the cap on for one year . For those who seek a smart and casual fountain pen, it is ideal for both business and daily use. Also recommended for fountain pen beginners. All Prefounte Fountain Pens are loaded with a blue black ink cartridge. Can be used with a converter (sold separately).