Platinum Biso

Introducing the Platinum Biso Fountain Pen, a writing instrument designed to inspire calm, clarity, and self-expression. The name “Biso” combines the Japanese characters for beauty (美) and harmony (奏)—a reflection of the pen’s purpose: to help you write beautifully and with inner balance.

Crafted with a lightweight, slim-profile body made from pearlescent resin, the Biso fountain pen offers a gentle shimmer that shifts subtly with light and angle, adding elegance to every writing moment. Compared to the Platinum #3776 Century, the Biso is noticeably lighter and slimmer, making it ideal for longer writing sessions and everyday comfort.

Finished with a gold-plated stainless steel nib, the Biso delivers smooth ink flow and a refined writing experience—perfect for journaling, letter writing, or personal reflection.