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**Specifications:**

**Brand:** deli

**Model:** S657

**Type:** Liquid Rollerball Pen

**Ink Capacity:** 1100m

**Tip Size:** 10.5mm

**Ink Type:** Water-based

**Features:** High ink capacity, smooth ink flow, stable performance, fine fiber tip, multi-layer fin design

**Design:** Multi-layer fin structure for stable ink flow, air vent to prevent ink leakage, high-quality fiber tip for smooth writing

**Ink Quality:** Low impurities, color accuracy, chemically stable

**Writing Length:** Approximately 1100m per pen

**Packaging:** 12 pens per box

**Color:** Black

**Certifications:** MA, CNAS, ilaC-MRA

**Quality Control:** Stringent testing and certification processes

**Additional:** Visible ink reservoir, non-replaceable ink cartridge design, high precision tungsten carbide ball, 0.5mm line width

**Dimensions:** Pen Length 135mm, Packaging 148x28x78mm

**Testing Report:** SHAH01031786, 150920340414, CNASL0139

**Note:** Product dimensions are manually measured and may have slight discrepancies.

**Summary:**

The deli S657 Liquid Rollerball Pen is designed for smooth and uninterrupted writing experience. With a large ink capacity of 1100m, high-quality fiber tip, and multi-layer fin structure, this pen ensures consistent ink flow and performance. It is certified for quality and reliability, making it a preferred choice for writing enthusiasts.