**Product Specifications:**
**Brand:** Baijin
**Colors:** Black, blue, red
**Tip Size:** 0.5mm
**Ink Type:** Gel ink
**Features:**
- Quick-drying and smear-proof
- Large capacity liquid ink
- Stable ink flow
- Air cushion system for pressure adjustment
- Ink length: 1525-1952 meters
**Certifications:**
- National Light Industry Water-based Pen Ballpoint Pen Quality Supervision and Inspection Center
- Testing Report Number: WY-2019-098
**Testing Results:**
- Writing Performance: Normal ink output within 100mm
- Line Drawing Performance: No broken or faint lines over 400mm
- Penetration: No visible marks on the back of writing paper after ≥24 hours
- Drying Time: ≤20 seconds, no ink marks on covering paper
**Additional Features:**
- High precision tungsten carbide tip
- Smooth and continuous ink flow
- Cap design with built-in clip for easy carrying
**Dimensions:**
- Length: 142mm
- Diameter: 10mm
Note: The above specifications are based on manual measurements and are for reference only.
