**Product Specifications:**
**Brand:** (Yupintang)
**Product Name:** (National Progressive Reading Glasses)
**Design:** Specifically designed for Chinese consumers, featuring a light luxury style and exquisite craftsmanship.
**Features:**
- Transparent and fashionable progressive reading glasses.
- Lightweight and stylish design for both near and far vision.
- HD, intelligent progressive lenses for high-definition vision.
- Super lightweight, comfortable, durable, and scratch-resistant.
**Design Details:**
- Ergonomic design tailored to Chinese facial features.
- Comfortable fit with non-slip nose pads and temple arms.
- High-quality PC lenses with anti-scratch and anti-glare coatings.
**Functionality:**
- Suitable for various activities such as walking, driving, reading, and playing mahjong.
- Transition zones for smooth near-to-far vision adjustments.
**Specifications:**
- **Model:** 3021
- **Material:** TR90 + Alloy
- **Nose Pad Material:** TR90
- **Frame Colors:** Rose Red / Gun Color
- **Weight:** Approximately 17.8g (including lenses)
- **Lens Type:** Progressive / High Definition
- **Target Users:** Middle-aged and elderly
- **Dimensions:** Total Width 132mm, Lens Height 35mm, Lens Width 48mm, Bridge Width 18mm, Temple Length 138mm
- **Face Shapes:** Heart-shaped, Round, Square, Long, Oval
- **Prescription Strengths:** +100D to +350D
**Additional Details:**
- Non-slip and comfortable nose pads.
- Durable hinge design for long-lasting use.
- Elastic temple arms for a comfortable fit.
**Variants:**
- **Model:** 3009
- **Material:** Alloy
- **Nose Pad Material:** Silicone
- **Frame Color:** Gold
- **Weight:** Approximately 21g (including lenses)
- **Lens Type:** Progressive / Reading
- **Dimensions:** Total Width 138mm, Lens Height 33mm, Lens Width 52mm, Bridge Width 18mm, Temple Length 135mm
(Note: The specifications provided are based on the information given in the description.)
