Bluetooth 5.4 Unparalleled Performance: Experience ultra-fast and stable connectivity with Bluetooth 5.4 technology. Enjoy crystal clear calls, lag-free music streaming, and instant pairing with your device, ensuring you stay connected wherever you go. These Bluetooth glasses provide a seamless wireless experience Unstoppable 9-hour battery life: The 9-hour battery life is powerful and can provide continuous power all day. Whether you're commuting, working, or exploring new destinations, you can enjoy uninterrupted audio, calls, and translation without constantly using a charger. This smart glasses for women and men provide you with reliable all-day use Immersive Open Audio for Maximum Cognitive Enhancement: Designed with cutting-edge open-ear sound technology, these Bluetooth headphones for men and women provide high-quality audio while keeping you aware of your surroundings. Perfect for city walks, cycling, office use, or simply enjoying hands-free entertainment without blocking surrounding sounds Fashionable, smart, and ultra-lightweight for all-day comfort: Elevate your style with a fashionable, modern frame that combines fashion and technology. The intuitive touch control and voice assistant compatibility make these Bluetooth sunglasses the perfect companion for easy communication, entertainment, and convenient travel. Both left and right sides are equipped with independent power switches and charging modules. To ensure proper charging, please make sure both sides are securely connected to the magnetic charging cable, and both power switches are turned on during use. If only one side is powered or charging, it is usually due to the switch not being activated or misaligned with the charging contacts. This is a normal operating characteristic of the product - it is not a defect.Non-woven Fabric