Japanese Platinum Brand Procyon Feather, Deep Sea Feather The Procyon Feather has been named the brightest star in Canis Minor. The dark blue aluminum body ensures excellent balance and an ideal grip in the hand. Procyon forever features a Slip & Seal mechanism that guarantees smooth writing at all times and prevents the ink from drying out at the tip. A specially designed drainage system helps fill the pen when only a small amount of ink remains in the bottle, without submerging the entire nib. The F. Spirit stainless steel nib is crafted with precision. The fountain pen has a dual refill system: the ink cartridge can be replaced with a converter. A fountain pen packaged in elegant branded packaging.