- Fine nib black ink, 1 retractable fountain pen includes 5 cartridges
- One-handed control, no cap to lose
- Sealing cover for high air-tightness, ink won't dry or leak out
- Precise ink regulator to adjust the amount of ink, ensuring clear lines and smooth writing
- Refillable design with matching cartrideges, environmental-friendly
- Ergonomic grip zone for comfortable writing experience
- Convenient small transparent box packing, can also be used as daily storage to avoid loss
