[Powerful waterproof performance] Bone conduction headphones have an IPX8 waterproof rating, allowing you to wear them while swimming or engaging in water activities. With special waterproof treatment, they effectively prevent water infiltration, ensuring reliable water resistance. Tips: water will affect bluetooth signal transmission, use MP3 mode when swimming. [Various styles of use] 3in1 headphones, including bone conduction, air conduction and in-ear. You can choose the appropriate wearing style based on different scenarios and personal preferences to achieve optimal sound quality and comfort. [Long battery life and comfortable design] The headphones come with a high capacity battery, ensuring long battery life. You can enjoy music without worrying about battery depletion.In addition, the headphones feature a comfortable design, including a memory titanium alloy structure and soft silicone material, which can be adjusted to fit into different head sizes, providing a comfortable wearing experience. [MP3 playback mode and 32GB memory] These headphones feature a switchable MP3 playback mode, allowing you to store your favorite music directly into the internal 32GB memory. You can enjoy music anytime, anywhere without relying on external devices. This provides greater flexibility and convenience, especially for outdoor sports and travel. [Advanced Bluetooth Technology] These headphones are equipped with a Bluetooth 5.3 chip, providing fast and stable wireless connectivity. Whether you connect them to a smartphone, tablet or any other Bluetooth device, you can enjoy smooth music playback and calling experiences. In addition, the headphones offer lower power consumption, which helps extend battery life. Material: plastic + metal