Normal Corridor Blue HMC Features: Progressive Lens Technology Normal CORRIDOR Design Lightweight and Durable Material HMC (Hard Multi-Coating) UV Protection Scratch resistance Blue Light Blocking (Blue HMC) Silver Progressive Blue Digital Wide Features: Digital Corridor Design free form TECHNOLOGY Easy to adopted Wide corridor zone HYDROPHOBIC coating easy to clean UV Protection Scratch resistance Water and Dust Repellent Blue Light Blocking (Blue HMC) 1 year warranty Gold Progressive Blue Wider Features: Wider Corridor Design Ideal for Digital Users Clear and Comfortable Vision Luxurious Appearance Comfortable for All-Day Wear Youthful and Modern Durability and Long-Lasting Quality HYDROPHOBIC coating easy to clean Lightweight and Durable Material HMC (Hard Multi-Coating) UV Protection scratch resistance of Water and Dust repellent Blue Light Blocking (Blue HMC) 1year warranty Platinum UHD Lens Features: Ultra high definition lens Superior Visual Clarity Optimal Visual Performance Comfortable for Extended Wear Suitable all day laptop and desktop user ARC COATING UV Protection Long-Term Eye Health Scratch Resistance Lightweight and Durable Material Water and Dust repellent Blue Light Blocking (Blue HMC) made in germen lens 1year warranty