Sunglasses with built-in bose speakers give you plenty of immersive sounds, while others barely hear anything The open ear design guarantees any security: you can listen to music easily, you can hear the sounds around you, and be safe when you run your bike Even if you wear it for a long time, it will not hurt your eardrum High-quality stereo riser, sound directional transmission technology, can answer calls Qualcomm 3034 chip, Bluetooth 5.0, Aptx 2 times faster than 4.2 transmission speed The ultra-light frame TR90 material Battery capacity 120mhA, charging for 2 hours, using 5 hours, IPX4 waterproof Feel free to change lenses