**Product Specifications:**
**Brand:** HELEN KELLER
**Design:** Business square frame design, Newtrend, incorporating narrow design into classic square shape, more suitable for business travelers. Model: H8961-H27
**Leg Design:** Straight and smooth leg lines with high elastic metal for comfortable wear.
**Product Parameters:** Frame width 148mm, frame height 147mm, lens width 62mm, bridge width 16mm. All measurements are manually taken and may have reasonable errors. Please refer to the actual product for accuracy.
**Product Model:** Eyeglass frame type: Full frame, Frame material: Manganese-nickel alloy, Lens material: Nylon (polarized), Product weight: 25g
**Face Shapes:** Suitable for round, oval, square, heart, and diamond face shapes.
**Available Colors:** H27 (Bright black frame + deep gray lens - polarized), H28 (Gun color frame + deep gray lens - polarized)
**Product Display:**
- H8961-H27: Bright black frame + deep gray lens (polarized), angled side view
- H8961-H28: Gun color frame + deep gray lens (polarized)
**Quality Inspection Report:** Quality assured by National Optical Testing Center (NOTC). Inspection results meet standards including lens power, UV protection, and size requirements.
**Certifications:** CMA (China Metrology Accreditation), CAL (China Accredited Laboratory), CNAS (China National Accreditation Service for Conformity Assessment), Hac-MRA Accreditation Cooperation-Mutual Recognition Arrangement.
**Standards:**
1. QB2457-1999
2. GB10810.3-2006
3. QB/T2506-2017