Material: PC, Function: Battery capacity 80mah, IPX4 waterproof level, UV400 polarized full protective lens, built-in microphone and speaker can answer calls and listen to songs hands-free, Bluetooth version 5.3, connection distance within 10m Polarized Sunglasses Lenses: Smart glasses features UV400 polarized full-protection lenses protect your eyes from the sun with excellent color, clarity and contrast. Built-in Microphone and Speaker: You can take calls hands-free,listen and speak clearly thanks to the covert omni-directional microphone built into the bezel. Powerful Multifunctional Button: Changing music tracks, playing or pausing media, managing calls and activating the voice assistant function is easy with just one button, making the design of your glasses fashion and easy to use. Ultra-high Quality Battery: Considering the user's long term experience, Smart Glasses are powered by a high quality battery, which takes only 2 hours to fully charge and can be used for up to 8 hours of continuous playback, which is both durable and safe. Latest Bluetooth Version 5.3: Smartly compatible with all kinds of Iphone and Android mobile phones, which makes the connection faster and more stable, so you will never worry about Bluetooth interruptions again!