- Piston filling fountain pen with a comfortable grip and a visible ink window that writes smoothly while remaining lightweight. Ideal for students, kids, adults, and beginners, including calligraphy practice. - Unique colors and finishes. Exquisitely colorful with several bright metallic color options. Pair with colored inks for scrapbooking, journaling, notes, drawing, lettering, graffiti, and art projects. - Fine 0.5 mm nib. Premium nib quality with a sturdy metal clip and a non-slip grip for excellent control and smooth, continuous writing. Long, balanced barrel for comfortable, extended use. Suitable for signatures, art signatures, and Chinese characters. - Twist to refill. Improved design with a piston-filled cartridge; easy refilling by turning the knob. Large ink capacity. Hollow pen body and a transparent cartridge let you see at a glance how much ink remains. - Use scenarios: - Everyday writing and note-taking in school, work, or journaling, where reliable flow and comfort matter. - Calligraphy practice, lettering, and drawing, including Chinese characters, where a fine 0.5 mm line is beneficial. - Signing documents or creating artwork and signatures that require a steady, confident stroke. - Specifications and features at a glance: - Fountain pen, piston-filling system, twist-to-refill mechanism - 0.5 mm fine nib - Metallic clip, non-slip grip - Lightweight and balanced for extended writing - Visible ink window and transparent cartridge - Multiple color options available