Compared to traditional capped fountain pens, this Clictek Fountain Pen solves the problems of losing or forgetting to replace the cap, and allows for one-handed operation, which is convenient. Compared with existing retractable fountain pens, it integrates three major systems and over 20 precision components into the pen body while keeping the barrel diameter under 12mm. With a youthful and stylish exterior, it offers an ideal writing solution for students.