**Specifications:**
**Brand:** Bertha
**Established:** Since 2008
**Product Type:** Crystal Eyeglasses
**Features:**
- Genuine crystal material
- High-definition for eye protection
- Accurate prescription lenses
- Elegant and charming design with Blue Crystalstone
- High-quality frames for a sophisticated look
- Anti-scratch and durable
- Comfortable and stylish for business and fashion
- Anti-aging and fashionable design
**Core Advantages:**
- Elegant Charm with Blue Crystalstone
- Natural crystal processing
- Scratch-resistant and durable
- High clarity and heat absorption
- Long-lasting and resistant to burning
**Additional Features:**
- Lightweight and comfortable
- Resistant to scratches and marks
- Classic design with durability
- Secure fit with no pressure on the nose
- Vacuum-plated for a fresh look
**Design Details:**
- Model: 54017-147C4
- Suitable for all face shapes
- Enhanced hinges for durability
- Silicone nose pads for comfort
**Weight:** 10.5g (frame only, excluding lenses)
**Design Principle:** Ensures a secure fit without squeezing or slipping
**Product Display:** Available in black and silver frames, with front and side views showcasing the high-quality crystal lenses
**Craftsmanship:** Each pair of Bertha crystal eyeglasses is meticulously handcrafted by experienced artisans, resulting in unique natural characteristics such as "cotton wool," ice cracks, or micro-dots inherent to genuine crystal stones.