These headphones use bone conduction technology, headphones do not enter the ear, no damage to the eardrum. Built-in sponge mute layer, listening to music is like playing a symphony in your ears. Built-in microphone lets you speak easily. Bluetooth 10m accessibility connection, automatic connection after power on, low power consumption and large capacity battery, listen to music for more than 8 hours and long battery life. Streamlined sunken design, fits your ear, lightweight and comfortable. Does not affect the headset when wearing glasses. No pain even for long-term use. Lightweight wrap-around titanium frame keeps wireless headphones stable during high-intensity training.