**Specifications:**
**Brand:** Dian Shi
**Product Name:** Quiet Click Dual-Ballpoint Retractable Pen
**Model Number:** DS-3163E-1
**Ink Color:** Black
**Tip Size:** 0.5mm dual-ballpoint needle tip
**Barrel Colors:** White, Transparent
**Packaging:** 8 pens per box
**Features:**
- Double-ballpoint needle tip for smoother writing
- Quiet click mechanism reduces noise
- Large ink capacity for extended use
- Quick-dry ink to prevent smudging
**Patents:** Chinese invention patent ZL202011217099.2
**Applications:** Suitable for quiet environments such as libraries, exam rooms, and study areas
**Benefits:**
- Allows for discreet clicking without disturbing others
- Smooth writing experience with reduced friction
- Long-lasting ink supply
**Compatibility:** Compatible with DS-1164 pen refills
**Packaging Display:** Each box contains 8 pens
**Additional Information:** Dian Shi specializes in pen manufacturing and focuses on creating pens that are quiet and non-disruptive in various settings.
