Flexible Earhook Design For Sport: Comfort and secure fit with light weight and ergonomic design,supper stablity with earhook, in-ear fitting tips and headband, great for Running, Jogging, Hiking, Biking, Gym, Workout outdoor or home. | Powerful Bass Stereo Sound: Upgraded bluetooth earbuds with 11mm dynamic drivers and clear calls technology, our ear buds deliver superior sound quality, powerful bass, and crystal-clear phone calls. Enjoy your music and conversations with unmatched clarity. | Up To 16 Hours Playtime: With an improved polymer lithium battery, Boean sports headphones offer up to 16 hours of playtime . Enjoy a superior audio experience with extended endurance, allowing you to immerse yourself in your favorite music or engage in important conversations without interruption. We recommend using the supplied USB C cable for faster charging. Other cables are not recommended. | One Step And Auto Pair: Running headphones equipped with the latest bluetooth 5.3 technology, easy to connect to your electronic device such as IOS/Android/Windows equipment, and 1 SECOND auto pair to your device next time. (Note: smart watch connectivity is not supported) | IPX7 Waterproof: With ergonomic design and silicone ear hooks, wireless headphones secure stay on your ears, feel great to wear and will never fall out. Upgraded IPX7 waterproof rating, whether you're running, working out, or in the rain, you don't have to worry about water or moisture damaging your headphones. Not recommended for swimming.