Open Ear Sound Experience The smart Bluetooth glasses serve as an open-ear headset, allowing you to listen to music, audiobooks, or answer calls anytime, anywhere. When you take a break in a cafe, simply wear them and immerse yourself in your audio world. Design Frame construction uses polymer material and weighs 1 ounce, making them ultra-light. This design reduces pressure on the ears and nose for comfortable all-day wear. Connectivity and Calls The glasses connect quickly and consistently via Bluetooth 5.3, with the latest version Bluetooth 5.4 offering about a 50 percent increase in transmission rate over 5.3. They support iPhone models, Android smartphones, and other devices, with a practical transmission range of 10-15 meters for worry-free connections. Power and Battery Life Powered by a high-capacity built-in battery, you can enjoy up to 7 hours of talk time and up to 8 hours of music playback on a single charge. The 160 mAh / 3.7 V battery fully charges in about 2 hours and provides up to 240 hours of standby time. Designed for all-day use.