**Product Specifications:**
**Brand:** Bertha
**Why Choose Us?**
- Bertha frameless design
- High-quality polarized lenses
- Intelligent photochromic polarized sunglasses
- Patented lenses with certificate number 558118
- Pure titanium legs for durability
- UV protection with ITO strengthened top film and AR anti-reflective film
- Lightweight titanium construction
- Patented technology for color-changing lenses
- Suitable for fishing to reduce glare
- SGS, CNAS, intellectual property, safety detection, and quality certification
**Product Details:**
- **Model Number:** MKF33072
- **Frame Type:** Frameless
- **Frame Material:** Titanium
- **Leg Material:** Titanium
- **Lens Material:** TAC
- **Weight:** Approximately 20.5g
- **Dimensions:** 60mm lens width, 50mm lens height, 15mm bridge width, 145mm temple length, 139mm frame width, 143mm frame height
**Variants:**
- M02: Black lenses, black frame
- M03: Light grey to dark grey lenses, gunmetal frame
- M04: Light grey to dark grey lenses, black frame
**Additional Features:**
- Silicone nose pads for comfort
- Lightweight and hypoallergenic titanium construction
- Rear-weighted frame design for reduced nose pressure
- Suitable for outdoor activities with high UV protection
**Certifications:**
- Intellectual property certification
- Safety detection certification
- Quality certification
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