A modern-design fountain pen featuring an integrated piston ink-filling mechanism. TWSBI Precision Fountain Pen – Gemini Blue. A brilliant fusion of contemporary industrial design and the timeless art of writing. Crafted from high-quality aluminum, it features a transparent ink window for monitoring ink levels and chrome-plated trims for an elegant finish. Its large ink capacity ensures extended writing autonomy, making it ideal for daily use. Equipped with a YoWo stainless steel nib, engraved and designed for a smooth, high-quality writing experience. The screw-on cap includes the signature TWSBI logo on the top, and a sturdy chrome-plated clip offers a secure grip wherever you go. TWSBI thoughtfully includes all the necessary tools in the box to fully disassemble and clean the pen—giving the owner a unique opportunity to understand and appreciate the inner workings of this exceptional writing instrument. When posted, the pen measures 17 cm; capped, it is 13.7 cm long and weighs 30 grams. Presented in a beautiful and secure gift box, ideal for gifting or personal use. Fun fact: The name TWSBI comes from reversing the initials of "San Wen Tong" (???), which translates to Hall of Three Cultures—a reference to a monument built by Emperor Qianlong to preserve the three great masterpieces of Chinese calligraphy. The word “Bi” (?) in Chinese refers to the magic of writing instruments. Hence, the name reflects a deep reverence for the written word and the artistry behind it. Pronounced: Twiz-bee!