About this item [Hi-Fi Stereo Sound]The innovative combination of bone conduction technology and speaker unit provides excellent sound quality, allowing you to pay attention to the sound of the surrounding environment while listening to music. Deeply tuned and customized by acoustic engineers, the highs are louder, the mids are softer and the bass deeper, and the excellent resolution and dynamic performance ensure that the sound is balanced, clear and high-fidelity. [10 Hours of Music and Calls]: Built-in high-quality lithium battery, supports up to 10 hours of continuous playback of music and calls, up to 360 hours of standby time (Type-C charging port). Built-in dual microphones, using advanced ENC noise reduction technology, can effectively reduce the impact of environmental noise, support high-definition voice calls, and make communication more convenient. [Stable and Comfortable]: Innovative open-ear design and ergonomic fit. Covered with a skin-friendly renewable-grade silicone material, it is comfortable and suitable for long-term wear. Weighing only 0.9oz/26g, the main body is made of lightweight and durable memory titanium material. The extreme ductility allows it to be quickly restored to its original shape after being folded at will. The wraparound titanium frame keeps your headphones stable during high-intensity workouts. [Professional Waterproof Design]: The CelsusSound sports headphones have passed the strict air tightness test and have reached IP54 waterproof level. It can completely avoid the risks of rain, sweat, etc., and meet the needs of sports enthusiasts and outdoor workers. Let you enjoy the delicate, rich and passionate music in fitness, running, cycling, rock climbing, yoga and other sports. [Extremely Convenient]: Bluetooth 5.2 supports fast pairing, the connection distance is more than 33ft/10m. The wide compatibility allows it to quickly connect with IOS and Android phones, tablets, PCs, TVs, smart watches and other devices. This multifunction button can adjust volume, Pause/switch music, answer/hang up calls and voice control, etc. The ALL-IN-ONE design can effectively avoid complicated operations and is more convenient to use.