PRICES MAY VARY. SMART EYE PROTECTION: KevBinth Polarized Sunglasses Filters Light with 100% protection from Harmful Ultraviolet Light Rays, (UV400) Blocking Wavelengths up to 400 Nanometers, Including UVA and UVB Rays SMART AUDIO: Using Bluetooth 5.0 Technology, KevBinth Sunglasses features Extended Headphones with Magnetic Fixed Position Capabilities, Designed for Faster & Stable Signal Connection & Transmission. Our Smart Glasses Integrate a Built-In Microphone with Stereo HD Quality Speakers