Fully transparent integrated pen barrel for visible remaining ink
Ultra-lightweight at ≤6.9g per pen
Smooth writing with high-strength tungsten carbide ball tip
Double writing length up to 2800 meters
Carbonized tungsten ball for durability
Minimalistic and aesthetic design
Additional details
Writing Performance
Up to 800 meters writing length per pen, equivalent to two standard pens; tested on national standard neutral paper using specialized "writing circular instrument" for line testing
Additional Notes
Data measured manually, actual product may vary slightly