1. Bluetooth Glasses Speaker: The dynamic driver, sound cavity design avoid hearing obstacles. The open-ear design helps you always pay attention to your surroundings, avoid danger and enjoy music. 2. Open-ear Solution: The solution allows you not only to listen to music, answer calls, but also to hear notifications from the glasses, while still listening to the world around you. 3. With Noise Cancelling Mic: This wireless Bluetooth 5.3 has a wide range of compatibility. Smart sunglasses have a built-in noise cancelling microphone that allows you to make and receive calls. So the glasses are perfect for cycling, running, driving, boxing, fishing, playing basketball, shopping and other outdoor activities, you can easily make calls with high-quality sound. 4. High Performance: The bluetooth headset sunglasses have a built-in 160mAh polymer lithium battery, which can for 5-8 hours, or answer calls for more than 12 hours, allowing you to use it all day. 5. IPX7 Waterproof Sunglasses: Our wireless Bluetooth 5.3 sunglasses are designed and have good waterproof effect, which can easily resist sweat and rain. The glasses are perfect for sports, music and calls. Colour:Black Material:PVC Package Contents: 1 x Smart Glasses 1 x USB Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.